Annotation of html5/spec/syntax.html, revision 1.889
1.872 mike 1: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
1.755 mike 2: <!-- when publishing, change bits marked ZZZ --><html lang="en-US-x-Hixie"><head><title>8 The HTML syntax — HTML 5</title><style type="text/css">
1.1 mike 3: pre { margin-left: 2em; white-space: pre-wrap; }
4: h2 { margin: 3em 0 1em 0; }
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21: dt dfn { font-style: italic; }
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24: pre em { font-weight: bolder; font-style: normal; }
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27: table { border-collapse: collapse; border-style: hidden hidden none hidden; }
28: table thead { border-bottom: solid; }
29: table tbody th:first-child { border-left: solid; }
1.475 mike 30: table tbody th { text-align: left; }
1.1 mike 31: table td, table th { border-left: solid; border-right: solid; border-bottom: solid thin; vertical-align: top; padding: 0.2em; }
32: blockquote { margin: 0 0 0 2em; border: 0; padding: 0; font-style: italic; }
33:
34: .bad, .bad *:not(.XXX) { color: gray; border-color: gray; background: transparent; }
35: .matrix, .matrix td { border: none; text-align: right; }
36: .matrix { margin-left: 2em; }
37: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
38: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
39: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
40:
41: .toc dfn, h1 dfn, h2 dfn, h3 dfn, h4 dfn, h5 dfn, h6 dfn { font: inherit; }
42: img.extra { float: right; }
43: pre.idl { border: solid thin; background: #EEEEEE; color: black; padding: 0.5em 1em; }
44: pre.idl :link, pre.idl :visited { color: inherit; background: transparent; }
45: pre.css { border: solid thin; background: #FFFFEE; color: black; padding: 0.5em 1em; }
46: pre.css:first-line { color: #AAAA50; }
1.840 mike 47: dl.domintro { color: green; margin: 2em 0 2em 2em; padding: 0.5em 1em; border: none; background: #DDFFDD; }
1.1 mike 48: hr + dl.domintro, div.impl + dl.domintro { margin-top: 2.5em; margin-bottom: 1.5em; }
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50: dl.domintro dd { margin: 0.5em 0 1em 2em; padding: 0; }
51: dl.domintro dd p { margin: 0.5em 0; }
52: dl.switch { padding-left: 2em; }
53: dl.switch > dt { text-indent: -1.5em; }
54: dl.switch > dt:before { content: '\21AA'; padding: 0 0.5em 0 0; display: inline-block; width: 1em; text-align: right; line-height: 0.5em; }
55: dl.triple { padding: 0 0 0 1em; }
56: dl.triple dt, dl.triple dd { margin: 0; display: inline }
57: dl.triple dt:after { content: ':'; }
58: dl.triple dd:after { content: '\A'; white-space: pre; }
59: .diff-old { text-decoration: line-through; color: silver; background: transparent; }
60: .diff-chg, .diff-new { text-decoration: underline; color: green; background: transparent; }
61: a .diff-new { border-bottom: 1px blue solid; }
62:
63: h2 { page-break-before: always; }
64: h1, h2, h3, h4, h5, h6 { page-break-after: avoid; }
65: h1 + h2, hr + h2.no-toc { page-break-before: auto; }
66:
67: p > span:not([title=""]):not([class="XXX"]):not([class="impl"]), li > span:not([title=""]):not([class="XXX"]):not([class="impl"]) { border-bottom: solid #9999CC; }
68:
69: div.head { margin: 0 0 1em; padding: 1em 0 0 0; }
70: div.head p { margin: 0; }
71: div.head h1 { margin: 0; }
72: div.head .logo { float: right; margin: 0 1em; }
73: div.head .logo img { border: none } /* remove border from top image */
74: div.head dl { margin: 1em 0; }
1.671 mike 75: div.head p.copyright, div.head p.alt { font-size: x-small; font-style: oblique; margin: 0; }
1.1 mike 76:
77: body > .toc > li { margin-top: 1em; margin-bottom: 1em; }
78: body > .toc.brief > li { margin-top: 0.35em; margin-bottom: 0.35em; }
79: body > .toc > li > * { margin-bottom: 0.5em; }
80: body > .toc > li > * > li > * { margin-bottom: 0.25em; }
81: .toc, .toc li { list-style: none; }
82:
83: .brief { margin-top: 1em; margin-bottom: 1em; line-height: 1.1; }
84: .brief li { margin: 0; padding: 0; }
85: .brief li p { margin: 0; padding: 0; }
86:
87: .category-list { margin-top: -0.75em; margin-bottom: 1em; line-height: 1.5; }
88: .category-list::before { content: '\21D2\A0'; font-size: 1.2em; font-weight: 900; }
89: .category-list li { display: inline; }
90: .category-list li:not(:last-child)::after { content: ', '; }
91: .category-list li > span, .category-list li > a { text-transform: lowercase; }
92: .category-list li * { text-transform: none; } /* don't affect <code> nested in <a> */
93:
94: .XXX { color: #E50000; background: white; border: solid red; padding: 0.5em; margin: 1em 0; }
95: .XXX > :first-child { margin-top: 0; }
96: p .XXX { line-height: 3em; }
1.159 mike 97: .annotation { border: solid thin black; background: #0C479D; color: white; position: relative; margin: 8px 0 20px 0; }
98: .annotation:before { position: absolute; left: 0; top: 0; width: 100%; height: 100%; margin: 6px -6px -6px 6px; background: #333333; z-index: -1; content: ''; }
99: .annotation :link, .annotation :visited { color: inherit; }
100: .annotation :link:hover, .annotation :visited:hover { background: transparent; }
101: .annotation span { border: none ! important; }
1.1 mike 102: .note { color: green; background: transparent; font-family: sans-serif; }
103: .warning { color: red; background: transparent; }
104: .note, .warning { font-weight: bolder; font-style: italic; }
105: p.note, div.note { padding: 0.5em 2em; }
106: span.note { padding: 0 2em; }
107: .note p:first-child, .warning p:first-child { margin-top: 0; }
108: .note p:last-child, .warning p:last-child { margin-bottom: 0; }
109: .warning:before { font-style: normal; }
110: p.note:before { content: 'Note: '; }
111: p.warning:before { content: '\26A0 Warning! '; }
112:
113: .bookkeeping:before { display: block; content: 'Bookkeeping details'; font-weight: bolder; font-style: italic; }
114: .bookkeeping { font-size: 0.8em; margin: 2em 0; }
115: .bookkeeping p { margin: 0.5em 2em; display: list-item; list-style: square; }
116:
117: h4 { position: relative; z-index: 3; }
118: h4 + .element, h4 + div + .element { margin-top: -2.5em; padding-top: 2em; }
119: .element {
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123: padding: 0 1em 0.25em 0.75em;
124: border-left: solid #9999FF 0.25em;
125: position: relative;
126: z-index: 1;
127: }
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132: left: -1.15em;
133: height: 2em;
134: width: 0.9em;
135: background: #EEEEFF;
136: content: ' ';
137: border-style: none none solid solid;
138: border-color: #9999FF;
139: border-width: 0.25em;
140: }
141:
1.149 mike 142: .example { display: block; color: #222222; background: #FCFCFC; border-left: double; margin-left: 2em; padding-left: 1em; }
143: td > .example:only-child { margin: 0 0 0 0.1em; }
1.1 mike 144:
145: ul.domTree, ul.domTree ul { padding: 0 0 0 1em; margin: 0; }
146: ul.domTree li { padding: 0; margin: 0; list-style: none; position: relative; }
147: ul.domTree li li { list-style: none; }
148: ul.domTree li:first-child::before { position: absolute; top: 0; height: 0.6em; left: -0.75em; width: 0.5em; border-style: none none solid solid; content: ''; border-width: 0.1em; }
149: ul.domTree li:not(:last-child)::after { position: absolute; top: 0; bottom: -0.6em; left: -0.75em; width: 0.5em; border-style: none none solid solid; content: ''; border-width: 0.1em; }
150: ul.domTree span { font-style: italic; font-family: serif; }
151: ul.domTree .t1 code { color: purple; font-weight: bold; }
152: ul.domTree .t2 { font-style: normal; font-family: monospace; }
153: ul.domTree .t2 .name { color: black; font-weight: bold; }
154: ul.domTree .t2 .value { color: blue; font-weight: normal; }
155: ul.domTree .t3 code, .domTree .t4 code, .domTree .t5 code { color: gray; }
156: ul.domTree .t7 code, .domTree .t8 code { color: green; }
157: ul.domTree .t10 code { color: teal; }
158:
1.736 mike 159: body.dfnEnabled dfn { cursor: pointer; }
160: .dfnPanel {
161: display: inline;
162: position: absolute;
163: z-index: 10;
164: height: auto;
165: width: auto;
166: padding: 0.5em 0.75em;
167: font: small sans-serif, Droid Sans Fallback;
168: background: #DDDDDD;
169: color: black;
170: border: outset 0.2em;
171: }
172: .dfnPanel * { margin: 0; padding: 0; font: inherit; text-indent: 0; }
173: .dfnPanel :link, .dfnPanel :visited { color: black; }
174: .dfnPanel p { font-weight: bolder; }
175: .dfnPanel * + p { margin-top: 0.25em; }
176: .dfnPanel li { list-style-position: inside; }
177:
1.671 mike 178: #configUI { position: absolute; z-index: 20; top: 10em; right: 1em; width: 11em; font-size: small; }
179: #configUI p { margin: 0.5em 0; padding: 0.3em; background: #EEEEEE; color: black; border: inset thin; }
180: #configUI p label { display: block; }
181: #configUI #updateUI, #configUI .loginUI { text-align: center; }
182: #configUI input[type=button] { display: block; margin: auto; }
1.267 mike 183: </style><style type="text/css">
184:
1.292 mike 185: .applies thead th > * { display: block; }
186: .applies thead code { display: block; }
187: .applies tbody th { whitespace: nowrap; }
188: .applies td { text-align: center; }
189: .applies .yes { background: yellow; }
190:
1.267 mike 191: .matrix, .matrix td { border: none; text-align: right; }
192: .matrix { margin-left: 2em; }
193:
194: .dice-example { border-collapse: collapse; border-style: hidden solid solid hidden; border-width: thin; margin-left: 3em; }
195: .dice-example caption { width: 30em; font-size: smaller; font-style: italic; padding: 0.75em 0; text-align: left; }
196: .dice-example td, .dice-example th { border: solid thin; width: 1.35em; height: 1.05em; text-align: center; padding: 0; }
197:
198: #table-example-1 { border: solid thin; border-collapse: collapse; margin-left: 3em; }
199: #table-example-1 * { font-family: "Essays1743", serif; line-height: 1.01em; }
200: #table-example-1 caption { padding-bottom: 0.5em; }
201: #table-example-1 thead, #table-example-1 tbody { border: none; }
202: #table-example-1 th, #table-example-1 td { border: solid thin; }
203: #table-example-1 th { font-weight: normal; }
204: #table-example-1 td { border-style: none solid; vertical-align: top; }
205: #table-example-1 th { padding: 0.5em; vertical-align: middle; text-align: center; }
206: #table-example-1 tbody tr:first-child td { padding-top: 0.5em; }
207: #table-example-1 tbody tr:last-child td { padding-bottom: 1.5em; }
208: #table-example-1 tbody td:first-child { padding-left: 2.5em; padding-right: 0; width: 9em; }
209: #table-example-1 tbody td:first-child::after { content: leader(". "); }
210: #table-example-1 tbody td { padding-left: 2em; padding-right: 2em; }
211: #table-example-1 tbody td:first-child + td { width: 10em; }
212: #table-example-1 tbody td:first-child + td ~ td { width: 2.5em; }
213: #table-example-1 tbody td:first-child + td + td + td ~ td { width: 1.25em; }
214:
215: .apple-table-examples { border: none; border-collapse: separate; border-spacing: 1.5em 0em; width: 40em; margin-left: 3em; }
216: .apple-table-examples * { font-family: "Times", serif; }
217: .apple-table-examples td, .apple-table-examples th { border: none; white-space: nowrap; padding-top: 0; padding-bottom: 0; }
218: .apple-table-examples tbody th:first-child { border-left: none; width: 100%; }
219: .apple-table-examples thead th:first-child ~ th { font-size: smaller; font-weight: bolder; border-bottom: solid 2px; text-align: center; }
220: .apple-table-examples tbody th::after, .apple-table-examples tfoot th::after { content: leader(". ") }
221: .apple-table-examples tbody th, .apple-table-examples tfoot th { font: inherit; text-align: left; }
222: .apple-table-examples td { text-align: right; vertical-align: top; }
223: .apple-table-examples.e1 tbody tr:last-child td { border-bottom: solid 1px; }
224: .apple-table-examples.e1 tbody + tbody tr:last-child td { border-bottom: double 3px; }
225: .apple-table-examples.e2 th[scope=row] { padding-left: 1em; }
226: .apple-table-examples sup { line-height: 0; }
227:
1.724 mike 228: .details-example img { vertical-align: top; }
229:
1.882 mike 230: #named-character-references-table {
231: font-size: 0.6em;
232: column-width: 28em;
233: column-gap: 1em;
234: -moz-column-width: 28em;
235: -moz-column-gap: 1em;
236: -webkit-column-width: 28em;
237: -webkit-column-gap: 1em;
238: }
239: #named-character-references-table > table > tbody > tr > td:last-child { text-align: center; }
240: #named-character-references-table > table > tbody > tr > td:last-child:hover > span { position: absolute; top: auto; left: auto; margin-left: 0.5em; line-height: 1.2; font-size: 5em; border: outset; padding: 0.25em 0.5em; background: white; width: 1.25em; height: auto; text-align: center; }
241:
1.872 mike 242: </style><style type="text/css">
1.881 mike 243: .domintro:before { display: table; margin: -1em -0.5em -0.5em auto; width: auto; content: 'This box is non-normative. Implementation requirements are given below this box.'; color: black; font-style: italic; border: solid 2px; background: white; padding: 0 0.25em; }
244: </style><link href="data:text/css," id="complete" rel="stylesheet" title="Complete specification"><link href="data:text/css,.impl%20%7B%20display:%20none;%20%7D%0Ahtml%20%7B%20border:%20solid%20yellow;%20%7D%20.domintro:before%20%7B%20display:%20none;%20%7D" id="author" rel="alternate stylesheet" title="Author documentation only"><link href="data:text/css,.impl%20%7B%20background:%20%23FFEEEE;%20%7D%20.domintro:before%20%7B%20background:%20%23FFEEEE;%20%7D" id="highlight" rel="alternate stylesheet" title="Highlight implementation requirements"><script type="text/javascript">
1.671 mike 245: function getCookie(name) {
246: var params = location.search.substr(1).split("&");
247: for (var index = 0; index < params.length; index++) {
248: if (params[index] == name)
249: return "1";
250: var data = params[index].split("=");
251: if (data[0] == name)
252: return unescape(data[1]);
253: }
254: var cookies = document.cookie.split("; ");
255: for (var index = 0; index < cookies.length; index++) {
256: var data = cookies[index].split("=");
257: if (data[0] == name)
258: return unescape(data[1]);
259: }
260: return null;
261: }
262: function load(script) {
263: var e = document.createElement('script');
264: e.setAttribute('src', 'http://www.whatwg.org/specs/web-apps/current-work/' + script + '?' + encodeURIComponent(location) + '&' + encodeURIComponent(document.referrer));
265: document.body.appendChild(e);
266: }
267: function init() {
268: if (location.search == '?slow-browser')
269: return;
270: var configUI = document.createElement('div');
271: configUI.id = 'configUI';
272: document.body.appendChild(configUI);
273: // load('reviewer.js'); // would need cross-site XHR
274: if (document.getElementById('head'))
275: load('toc.js');
276: load('styler.js');
277: // load('updater.js'); // would need cross-site XHR
1.724 mike 278: load('dfn.js'); // doesn't support split-out specs, but, oh well.
1.671 mike 279: // load('status.js'); // would need cross-site XHR
280: if (getCookie('profile') == '1')
281: document.getElementsByTagName('h2')[0].textContent += '; load: ' + (new Date() - loadTimer) + 'ms';
282: fixBrokenLink();
283: }
1.808 mike 284: </script><link href="http://www.w3.org/StyleSheets/TR/W3C-WD" rel="stylesheet" type="text/css">
1.873 mike 285: <script src="link-fixup.js" type="text/javascript"></script>
1.755 mike 286: <link href="editing.html" title="7 User interaction" rel="prev">
1.2 mike 287: <link href="spec.html#contents" title="Table of contents" rel="index">
1.755 mike 288: <link href="named-character-references.html" title="8.5 Named character references" rel="next">
1.671 mike 289: </head><body onload="fixBrokenLink(); init()"><div class="head" id="head">
1.1 mike 290: <p><a href="http://www.w3.org/"><img alt="W3C" height="48" src="http://www.w3.org/Icons/w3c_home" width="72"></a></p>
1.183 mike 291: <h1>HTML5</h1>
1.889 ! mike 292: <h2 class="no-num no-toc" id="a-vocabulary-and-associated-apis-for-html-and-xhtml">A vocabulary and associated APIs for HTML and XHTML</h2><p>This is revision 1.3973.</p>
1.885 mike 293:
1.874 mike 294: </div><div>
1.755 mike 295: <a href="editing.html">← 7 User interaction</a> –
1.2 mike 296: <a href="spec.html#contents">Table of contents</a> –
1.755 mike 297: <a href="named-character-references.html">8.5 Named character references →</a>
1.874 mike 298: </div>
1.1 mike 299:
1.755 mike 300: <h2 id="syntax"><span class="secno">8 </span><dfn>The HTML syntax</dfn></h2><p class="note">This section only describes the rules for resources
1.725 mike 301: labeled with an <a href="infrastructure.html#html-mime-type">HTML MIME type</a>. Rules for XML resources
302: are discussed in the section below entitled "<a href="the-xhtml-syntax.html#the-xhtml-syntax">The XHTML
1.755 mike 303: syntax</a>".</p><h3 id="writing"><span class="secno">8.1 </span>Writing HTML documents</h3><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><div class="impl">
1.1 mike 304:
305: <p><i>This section only applies to documents, authoring tools, and
306: markup generators. In particular, it does not apply to conformance
307: checkers; conformance checkers must use the requirements given in
308: the next section ("parsing HTML documents").</i></p>
309:
1.123 mike 310: </div><p>Documents must consist of the following parts, in the given
311: order:</p><ol><li>Optionally, a single U+FEFF BYTE ORDER MARK (BOM) character.</li>
1.1 mike 312:
313: <li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
314: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
315:
316: <li>A <a href="#syntax-doctype" title="syntax-doctype">DOCTYPE</a>.
317:
318: </li><li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
319: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
320:
1.159 mike 321: <li>The root element, in the form of an <code><a href="semantics.html#the-html-element-0">html</a></code> <a href="#syntax-elements" title="syntax-elements">element</a>.</li>
1.1 mike 322:
323: <li>Any number of <a href="#syntax-comments" title="syntax-comments">comments</a> and
324: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
325:
326: </ol><p>The various types of content mentioned above are described in the
1.123 mike 327: next few sections.</p><p>In addition, there are some restrictions on how <a href="semantics.html#character-encoding-declaration" title="character encoding declaration">character encoding
1.1 mike 328: declarations</a> are to be serialized, as discussed in the
1.123 mike 329: section on that topic.</p><div class="note">
1.1 mike 330:
1.159 mike 331: <p>Space characters before the root <code><a href="semantics.html#the-html-element-0">html</a></code> element, and
332: space characters at the start of the <code><a href="semantics.html#the-html-element-0">html</a></code> element and
333: before the <code><a href="semantics.html#the-head-element-0">head</a></code> element, will be dropped when the
1.1 mike 334: document is parsed; space characters <em>after</em> the root
1.159 mike 335: <code><a href="semantics.html#the-html-element-0">html</a></code> element will be parsed as if they were at the end
336: of the <code><a href="semantics.html#the-body-element-0">body</a></code> element. Thus, space characters around the
1.1 mike 337: root element do not round-trip.</p>
338:
339: <p>It is suggested that newlines be inserted after the DOCTYPE,
340: after any comments that are before the root element, after the
1.159 mike 341: <code><a href="semantics.html#the-html-element-0">html</a></code> element's start tag (if it is not <a href="#syntax-tag-omission" title="syntax-tag-omission">omitted</a>), and after any comments
342: that are inside the <code><a href="semantics.html#the-html-element-0">html</a></code> element but before the
343: <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 344:
1.123 mike 345: </div><p>Many strings in the HTML syntax (e.g. the names of elements and
1.1 mike 346: their attributes) are case-insensitive, but only for characters in
1.547 mike 347: the ranges U+0041 to U+005A (LATIN CAPITAL LETTER A to LATIN CAPITAL
348: LETTER Z) and U+0061 to U+007A (LATIN SMALL LETTER A to LATIN SMALL
1.1 mike 349: LETTER Z). For convenience, in this section this is just referred to
1.884 mike 350: as "case-insensitive".</p><h4 id="the-doctype"><span class="secno">8.1.1 </span>The DOCTYPE</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments. </i><span><a href="http://www.w3.org/html/wg/tracker/issues/4">ISSUE-4</a> (html-versioning) and <a href="http://www.w3.org/html/wg/tracker/issues/84">ISSUE-84</a> (legacy-doctypes) block progress to Last Call</span></p><p>A <dfn id="syntax-doctype" title="syntax-doctype">DOCTYPE</dfn> is a <!-- mostly
351: useless but nonetheless --> required preamble.</p><p class="note">DOCTYPEs are required for legacy reasons. When
1.1 mike 352: omitted, browsers tend to use a different rendering mode that is
353: incompatible with some specifications. Including the DOCTYPE in a
354: document ensures that the browser makes a best-effort attempt at
1.123 mike 355: following the relevant specifications.</p><p>A DOCTYPE must consist of the following characters, in this
1.882 mike 356: order:</p><ol class="brief"><li>A string that is an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for the string "<code title=""><!DOCTYPE</code>".</li>
1.1 mike 357: <li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
358: <li>A string that is an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for the string "<code title="">HTML</code>".</li>
1.861 mike 359: <li>Optionally, a <a href="#doctype-legacy-string">DOCTYPE legacy string</a> or an <a href="#obsolete-permitted-doctype-string">obsolete permitted DOCTYPE string</a> (defined below).</li>
1.1 mike 360: <li>Zero or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
1.588 mike 361: <li>A U+003E GREATER-THAN SIGN character (>).</li>
1.1 mike 362: </ol><p class="note">In other words, <code><!DOCTYPE HTML></code>,
1.861 mike 363: case-insensitively.</p><hr><p>For the purposes of HTML generators that cannot output HTML
1.1 mike 364: markup with the short DOCTYPE "<code title=""><!DOCTYPE
365: HTML></code>", a <dfn id="doctype-legacy-string">DOCTYPE legacy string</dfn> may be inserted
366: into the DOCTYPE (in the position defined above). This string must
1.123 mike 367: consist of:</p><ol class="brief"><li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
1.1 mike 368: <li>A string that is an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for the string "<code title="">SYSTEM</code>".</li>
1.444 mike 369: <li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
1.1 mike 370: <li>A U+0022 QUOTATION MARK or U+0027 APOSTROPHE character (the <i>quote mark</i>).</li>
1.465 mike 371: <li>The literal string "<code><a href="infrastructure.html#about:legacy-compat">about:legacy-compat</a></code>".</li>
1.856 mike 372: <li>A matching U+0022 QUOTATION MARK or U+0027 APOSTROPHE character (i.e. the same character as in the earlier step labeled <i>quote mark</i>).</li>
1.1 mike 373: </ol><p class="note">In other words, <code><!DOCTYPE HTML SYSTEM
374: "about:legacy-compat"></code> or <code><!DOCTYPE HTML SYSTEM
375: 'about:legacy-compat'></code>, case-insensitively except for the bit
1.724 mike 376: in single or double quotes.</p><p>The <a href="#doctype-legacy-string">DOCTYPE legacy string</a> should not be used unless
1.1 mike 377: the document is generated from a system that cannot output the
1.861 mike 378: shorter string.</p><hr><!-- see the parser section before changing this bit --><p>To help authors transition from HTML4 and XHTML1, an
379: <dfn id="obsolete-permitted-doctype-string">obsolete permitted DOCTYPE string</dfn> can be inserted into
380: the DOCTYPE (in the position defined above). This string must
381: consist of:</p><ol class="brief"><li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
382: <li>A string that is an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for the string "<code title="">PUBLIC</code>".</li>
383: <li>One or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
384: <li>A U+0022 QUOTATION MARK or U+0027 APOSTROPHE character (the <i>first quote mark</i>).</li>
385: <li>The string from one of the cells in the first column of the table below. The row to which this cell belongs is the <i>selected row</i>.</li>
386: <li>A matching U+0022 QUOTATION MARK or U+0027 APOSTROPHE character (i.e. the same character as in the earlier step labeled <i>first quote mark</i>).</li>
387: <li>If the cell in the second column of the <i>selected row</i> is not blank, one or more <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
388: <li>If the cell in the second column of the <i>selected row</i> is not blank, a U+0022 QUOTATION MARK or U+0027 APOSTROPHE character (the <i>third quote mark</i>).</li>
389: <li>If the cell in the second column of the <i>selected row</i> is not blank, the string from the cell in the second column of the <i>selected row</i>.</li>
390: <li>If the cell in the second column of the <i>selected row</i> is not blank, a matching U+0022 QUOTATION MARK or U+0027 APOSTROPHE character (i.e. the same character as in the earlier step labeled <i>third quote mark</i>).</li>
391: </ol><table><caption>
392: Allowed values for public and system identifiers in an <a href="#obsolete-permitted-doctype-string">obsolete permitted DOCTYPE string</a>.
393: </caption>
394: <thead><tr><th> Public identifier
395: </th><th> System identifier
396: </th></tr></thead><tbody><tr><td> <code title="">-//W3C//DTD HTML 4.0//EN</code>
397: </td><td>
398: </td></tr><tr><td> <code title="">-//W3C//DTD HTML 4.0//EN</code>
399: </td><td> <code title="">http://www.w3.org/TR/REC-html40/strict.dtd</code>
400: </td></tr><tr><td> <code title="">-//W3C//DTD HTML 4.01//EN</code>
401: </td><td>
402: </td></tr><tr><td> <code title="">-//W3C//DTD HTML 4.01//EN</code>
403: </td><td> <code title="">http://www.w3.org/TR/html4/strict.dtd</code>
404: </td></tr><tr><td> <code title="">-//W3C//DTD XHTML 1.0 Strict//EN</code>
405: </td><td> <code title="">http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd</code>
406: </td></tr><tr><td> <code title="">-//W3C//DTD XHTML 1.1//EN</code>
407: </td><td> <code title="">http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd</code>
408: </td></tr></tbody></table><p>A <a href="#syntax-doctype" title="syntax-doctype">DOCTYPE</a> containing an
409: <a href="#obsolete-permitted-doctype-string">obsolete permitted DOCTYPE string</a> is an <dfn id="obsolete-permitted-doctype">obsolete
410: permitted DOCTYPE</dfn>. Authors should not use <a href="#obsolete-permitted-doctype" title="obsolete permitted DOCTYPE">obsolete permitted
411: DOCTYPEs</a>, as they are unnecessarily long.</p><h4 id="elements-0"><span class="secno">8.1.2 </span>Elements</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p>There are five different kinds of <dfn id="syntax-elements" title="syntax-elements">elements</dfn>: <a href="#void-elements">void elements</a>,
1.373 mike 412: <a href="#raw-text-elements">raw text elements</a>, <a href="#rcdata-elements">RCDATA elements</a>,
413: <a href="#foreign-elements">foreign elements</a>, and <a href="#normal-elements">normal elements</a>.</p><dl><dt><dfn id="void-elements">Void elements</dfn></dt>
1.1 mike 414:
415: <dd><code><a href="the-canvas-element.html#the-area-element">area</a></code>, <code><a href="semantics.html#the-base-element">base</a></code>, <code><a href="semantics.html#the-br-element">br</a></code>,
1.159 mike 416: <code><a href="tabular-data.html#the-col-element">col</a></code>, <code><a href="interactive-elements.html#the-command">command</a></code>, <code><a href="text-level-semantics.html#the-embed-element">embed</a></code>,
417: <code><a href="semantics.html#the-hr-element">hr</a></code>, <code><a href="text-level-semantics.html#the-img-element">img</a></code>, <code><a href="forms.html#the-input-element">input</a></code>,
1.1 mike 418: <code><a href="forms.html#the-keygen-element">keygen</a></code>, <code><a href="semantics.html#the-link-element">link</a></code>, <code><a href="semantics.html#meta">meta</a></code>,
1.159 mike 419: <code><a href="text-level-semantics.html#the-param-element">param</a></code>, <code><a href="video.html#the-source-element">source</a></code></dd>
1.1 mike 420:
1.373 mike 421: <dt><dfn id="raw-text-elements">Raw text elements</dfn></dt>
1.1 mike 422:
423: <dd><code><a href="semantics.html#script">script</a></code>, <code><a href="semantics.html#the-style-element">style</a></code></dd> <!-- iframe and
1.91 mike 424: noscript don't count as raw text for syntax purposes -->
1.1 mike 425:
1.373 mike 426: <dt><dfn id="rcdata-elements">RCDATA elements</dfn></dt>
1.1 mike 427:
1.159 mike 428: <dd><code><a href="forms.html#the-textarea-element">textarea</a></code>, <code><a href="semantics.html#the-title-element-0">title</a></code></dd>
1.1 mike 429:
1.373 mike 430: <dt><dfn id="foreign-elements">Foreign elements</dfn></dt>
1.1 mike 431:
1.724 mike 432: <dd>Elements from the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>
433: and the <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</dd>
1.1 mike 434:
1.373 mike 435: <dt><dfn id="normal-elements">Normal elements</dfn></dt>
1.1 mike 436:
437: <dd>All other allowed <a href="infrastructure.html#html-elements">HTML elements</a> are normal
438: elements.</dd>
439:
440: </dl><p><dfn id="syntax-tags" title="syntax-tags">Tags</dfn> are used to delimit the start
1.373 mike 441: and end of elements in the markup. <a href="#raw-text-elements" title="raw text
442: elements">Raw text</a>, <a href="#rcdata-elements" title="RCDATA
443: elements">RCDATA</a>, and <a href="#normal-elements" title="normal
444: elements">normal</a> elements have a <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> to indicate where they
445: begin, and an <a href="#syntax-end-tag" title="syntax-end-tag">end tag</a> to
446: indicate where they end. The start and end tags of certain
447: <a href="#normal-elements">normal elements</a> can be <a href="#syntax-tag-omission" title="syntax-tag-omission">omitted</a>, as described
1.1 mike 448: later. Those that cannot be omitted must not be omitted. <a href="#void-elements">Void
449: elements</a> only have a start tag; end tags must not be
1.373 mike 450: specified for <a href="#void-elements">void elements</a>. <a href="#foreign-elements">Foreign
451: elements</a> must either have a start tag and an end tag, or a
452: start tag that is marked as self-closing, in which case they must
453: not have an end tag.</p><p>The contents of the element must be placed between just after the
1.1 mike 454: start tag (which <a href="#syntax-tag-omission" title="syntax-tag-omission">might be implied,
455: in certain cases</a>) and just before the end tag (which again,
456: <a href="#syntax-tag-omission" title="syntax-tag-omission">might be implied in certain
457: cases</a>). The exact allowed contents of each individual element
458: depends on the content model of that element, as described earlier
459: in this specification. Elements must not contain content that their
460: content model disallows. In addition to the restrictions placed on
461: the contents by those content models, however, the five types of
1.123 mike 462: elements have additional <em>syntactic</em> requirements.</p><p><a href="#void-elements">Void elements</a> can't have any contents (since there's
1.1 mike 463: no end tag, no content can be put between the start tag and the end
1.373 mike 464: tag).</p><p><a href="#raw-text-elements">Raw text elements</a> can have <a href="#syntax-text" title="syntax-text">text</a>, though it has <a href="#cdata-rcdata-restrictions">restrictions</a> described
465: below.</p><p><a href="#rcdata-elements">RCDATA elements</a> can have <a href="#syntax-text" title="syntax-text">text</a> and <a href="#syntax-charref" title="syntax-charref">character references</a>, but the text
466: must not contain an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>.
1.1 mike 467: There are also <a href="#cdata-rcdata-restrictions">further
1.373 mike 468: restrictions</a> described below.</p><p><a href="#foreign-elements">Foreign elements</a> whose start tag is marked as
469: self-closing can't have any contents (since, again, as there's no
470: end tag, no content can be put between the start tag and the end
471: tag). <a href="#foreign-elements">Foreign elements</a> whose start tag is <em>not</em>
472: marked as self-closing can have <a href="#syntax-text" title="syntax-text">text</a>, <a href="#syntax-charref" title="syntax-charref">character references</a>, <a href="#syntax-cdata" title="syntax-cdata">CDATA sections</a>, other <a href="#syntax-elements" title="syntax-elements">elements</a>, and <a href="#syntax-comments" title="syntax-comments">comments</a>, but the text must not
1.588 mike 473: contain the character U+003C LESS-THAN SIGN (<) or an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>.</p><div class="note">
1.374 mike 474:
475: <p>The HTML syntax does not support namespace
476: declarations, even in <a href="#foreign-elements">foreign elements</a>.</p>
477:
478: <p>For instance, consider the following HTML fragment:</p>
479:
480: <pre><p>
481: <svg>
482: <metadata>
483: <!-- this is invalid -->
484: <cdr:license xmlns:cdr="http://www.example.com/cdr/metadata" name="MIT"/>
485: </metadata>
486: </svg>
487: </p></pre>
488:
489: <p>The innermost element, <code title="">cdr:license</code>, is
490: actually in the SVG namespace, as the "<code title="">xmlns:cdr</code>" attribute has no effect (unlike in
491: XML). In fact, as the comment in the fragment above says, the
492: fragment is actually non-conforming. This is because the SVG
493: specification does not define any elements called "<code title="">cdr:license</code>" in the SVG namespace.</p>
494:
495: </div><p><a href="#normal-elements">Normal elements</a> can have <a href="#syntax-text" title="syntax-text">text</a>, <a href="#syntax-charref" title="syntax-charref">character references</a>, other <a href="#syntax-elements" title="syntax-elements">elements</a>, and <a href="#syntax-comments" title="syntax-comments">comments</a>, but the text must not
1.588 mike 496: contain the character U+003C LESS-THAN SIGN (<) or an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>. Some
497: <a href="#normal-elements">normal elements</a> also have <a href="#element-restrictions">yet more restrictions</a> on what
1.1 mike 498: content they are allowed to hold, beyond the restrictions imposed by
499: the content model and those described in this paragraph. Those
1.123 mike 500: restrictions are described below.</p><p>Tags contain a <dfn id="syntax-tag-name" title="syntax-tag-name">tag name</dfn>,
1.1 mike 501: giving the element's name. HTML elements all have names that only
1.464 mike 502: use characters in the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT
503: NINE (9), U+0061 LATIN SMALL LETTER A to U+007A LATIN SMALL LETTER
504: Z, and U+0041 LATIN CAPITAL LETTER A to U+005A LATIN CAPITAL LETTER
505: Z. In the HTML syntax, tag names, even those for <a href="#foreign-elements">foreign
1.462 mike 506: elements</a>, may be written with any mix of lower- and uppercase
507: letters that, when converted to all-lowercase, matches the element's
1.755 mike 508: tag name; tag names are case-insensitive.</p><h5 id="start-tags"><span class="secno">8.1.2.1 </span>Start tags</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p><dfn id="syntax-start-tag" title="syntax-start-tag">Start tags</dfn> must have the
1.123 mike 509: following format:</p><ol><li>The first character of a start tag must be a U+003C LESS-THAN
1.588 mike 510: SIGN character (<).</li>
1.1 mike 511:
512: <li>The next few characters of a start tag must be the element's
513: <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a>.</li>
514:
515: <li>If there are to be any attributes in the next step, there must
516: first be one or more <a href="infrastructure.html#space-character" title="space character">space
517: characters</a>.</li>
518:
519: <li>Then, the start tag may have a number of attributes, the <a href="#syntax-attributes" title="syntax-attributes">syntax for which</a> is described
520: below. Attributes may be separated from each other by one or more
521: <a href="infrastructure.html#space-character" title="space character">space characters</a>.</li>
522:
1.766 mike 523: <li>After the attributes, or after the <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a> if there are no attributes,
524: there may be one or more <a href="infrastructure.html#space-character" title="space character">space
525: characters</a>. (Some attributes are required to be followed by
526: a space. See the <a href="#syntax-attributes" title="syntax-attributes">attributes
527: section</a> below.)</li>
1.1 mike 528:
529: <li>Then, if the element is one of the <a href="#void-elements">void elements</a>,
1.373 mike 530: or if the element is a <a href="#foreign-elements" title="foreign elements">foreign
1.588 mike 531: element</a>, then there may be a single U+002F SOLIDUS character
532: (/). This character has no effect on <a href="#void-elements">void elements</a>,
533: but on <a href="#foreign-elements">foreign elements</a> it marks the start tag as
534: self-closing.</li>
1.1 mike 535:
536: <li>Finally, start tags must be closed by a U+003E GREATER-THAN
1.588 mike 537: SIGN character (>).</li>
1.1 mike 538:
1.755 mike 539: </ol><h5 id="end-tags"><span class="secno">8.1.2.2 </span>End tags</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p><dfn id="syntax-end-tag" title="syntax-end-tag">End tags</dfn> must have the
1.123 mike 540: following format:</p><ol><li>The first character of an end tag must be a U+003C LESS-THAN
1.588 mike 541: SIGN character (<).</li>
1.1 mike 542:
543: <li>The second character of an end tag must be a U+002F SOLIDUS
1.588 mike 544: character (/).</li>
1.1 mike 545:
546: <li>The next few characters of an end tag must be the element's
547: <a href="#syntax-tag-name" title="syntax-tag-name">tag name</a>.</li>
548:
549: <li>After the tag name, there may be one or more <a href="infrastructure.html#space-character" title="space
550: character">space characters</a>.</li>
551:
1.588 mike 552: <li>Finally, end tags must be closed by a U+003E GREATER-THAN SIGN
553: character (>).</li>
1.1 mike 554:
1.755 mike 555: </ol><h5 id="attributes"><span class="secno">8.1.2.3 </span>Attributes</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p><dfn id="syntax-attributes" title="syntax-attributes">Attributes</dfn> for an element
1.123 mike 556: are expressed inside the element's start tag.</p><p>Attributes have a name and a value. <dfn id="syntax-attribute-name" title="syntax-attribute-name">Attribute names</dfn> must consist of
1.1 mike 557: one or more characters other than the <a href="infrastructure.html#space-character" title="space
558: character">space characters</a>, U+0000 NULL, U+0022 QUOTATION
559: MARK ("), U+0027 APOSTROPHE ('), U+003E GREATER-THAN SIGN
560: (>), U+002F SOLIDUS (/), and U+003D EQUALS SIGN (=) characters,
561: the control characters, and any characters that are not defined by
1.462 mike 562: Unicode. In the HTML syntax, attribute names, even those for
563: <a href="#foreign-elements">foreign elements</a>, may be written with any mix of lower-
564: and uppercase letters that are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1.123 mike 565: case-insensitive</a> match for the attribute's name.</p><p><dfn id="syntax-attribute-value" title="syntax-attribute-value">Attribute values</dfn> are a
1.1 mike 566: mixture of <a href="#syntax-text" title="syntax-text">text</a> and <a href="#syntax-charref" title="syntax-charref">character references</a>, except with the
1.123 mike 567: additional restriction that the text cannot contain an <a href="#syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous ampersand</a>.</p><p>Attributes can be specified in four different ways:</p><dl><dt>Empty attribute syntax</dt>
1.1 mike 568:
569: <dd>
570:
571: <p>Just the <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute
1.837 mike 572: name</a>. The value is implicitly the empty string.</p>
1.1 mike 573:
574: <div class="example">
575:
576: <p>In the following example, the <code title="attr-fe-disabled"><a href="forms.html#attr-fe-disabled">disabled</a></code> attribute is given with
577: the empty attribute syntax:</p>
578:
579: <pre><input <em>disabled</em>></pre>
580:
581: </div>
582:
583: <p>If an attribute using the empty attribute syntax is to be
584: followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
585: character</a> separating the two.</p>
586:
587: </dd>
588:
1.2 mike 589: <dt id="unquoted">Unquoted attribute value syntax</dt>
1.1 mike 590:
591: <dd>
592:
593: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
594: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
595: characters</a>, followed by a single U+003D EQUALS SIGN
596: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
597: character">space characters</a>, followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
598: addition to the requirements given above for attribute values,
599: must not contain any literal <a href="infrastructure.html#space-character" title="space character">space
1.588 mike 600: characters</a>, any U+0022 QUOTATION MARK characters ("),
601: U+0027 APOSTROPHE characters ('), U+003D EQUALS SIGN
602: characters (=), U+003C LESS-THAN SIGN characters (<), U+003E
603: GREATER-THAN SIGN characters (>), or U+0060 GRAVE ACCENT
604: characters (`), and must not be the empty string.</p>
1.463 mike 605:
606: <!-- The ` character is in this list on a temporary basis, waiting
607: for IE to fix it's parsing bug whereby it treats ` as an
608: attribute value delimiter. Otherwise, escaping software that
609: tries to be clever and not use quotes when it doesn't need to
610: could be tricked by an attacker.
611:
612: Posit a site that allows the user to input text that is used
613: verbatim in two attributes, such that the user can set the
614: first attribute's value to:
615:
616: `
617:
618: ...and the second to:
619:
620: ` onload='...payload...' end=x
621:
622: ...with the assumption that the site is going to not quote
623: the first one, and quote the second one with double quotes:
624:
625: <body title=` class="` onload='...payload...' end=x">
626:
627: In IE, this is treated as:
628:
629: <body title=' class="'
630: onload='...payload...'
631: end='x"'>
632:
633: -->
634:
1.1 mike 635:
636: <div class="example">
637:
638: <p>In the following example, the <code title="attr-input-value"><a href="forms.html#attr-input-value">value</a></code> attribute is given
639: with the unquoted attribute value syntax:</p>
640:
641: <pre><input <em>value=yes</em>></pre>
642:
643: </div>
644:
645: <p>If an attribute using the unquoted attribute syntax is to be
1.101 mike 646: followed by another attribute or by the optional U+002F SOLIDUS
1.464 mike 647: character (/) allowed in step 6 of the <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> syntax above, then there
1.1 mike 648: must be a <a href="infrastructure.html#space-character">space character</a> separating the two.</p>
649:
650: </dd>
651:
652: <dt>Single-quoted attribute value syntax</dt>
653:
654: <dd>
655:
656: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
657: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
658: characters</a>, followed by a single U+003D EQUALS SIGN
659: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
660: character">space characters</a>, followed by a single U+0027
1.588 mike 661: APOSTROPHE character ('), followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
1.1 mike 662: addition to the requirements given above for attribute values,
1.588 mike 663: must not contain any literal U+0027 APOSTROPHE characters ('), and
664: finally followed by a second single U+0027 APOSTROPHE character
665: (').</p>
1.1 mike 666:
667: <div class="example">
668:
669: <p>In the following example, the <code title="attr-input-type"><a href="forms.html#attr-input-type">type</a></code> attribute is given with the
670: single-quoted attribute value syntax:</p>
671:
672: <pre><input <em>type='checkbox'</em>></pre>
673:
674: </div>
675:
676: <p>If an attribute using the single-quoted attribute syntax is to
677: be followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
678: character</a> separating the two.</p>
679:
680: </dd>
681:
682: <dt>Double-quoted attribute value syntax</dt>
683:
684: <dd>
685:
686: <p>The <a href="#syntax-attribute-name" title="syntax-attribute-name">attribute name</a>,
687: followed by zero or more <a href="infrastructure.html#space-character" title="space character">space
688: characters</a>, followed by a single U+003D EQUALS SIGN
689: character, followed by zero or more <a href="infrastructure.html#space-character" title="space
690: character">space characters</a>, followed by a single U+0022
1.588 mike 691: QUOTATION MARK character ("), followed by the <a href="#syntax-attribute-value" title="syntax-attribute-value">attribute value</a>, which, in
1.1 mike 692: addition to the requirements given above for attribute values,
1.588 mike 693: must not contain any literal U+0022 QUOTATION MARK characters ("),
694: and finally followed by a second single U+0022 QUOTATION MARK
695: character (").</p>
1.1 mike 696:
697: <div class="example">
698:
699: <p>In the following example, the <code title="attr-fe-name"><a href="forms.html#attr-fe-name">name</a></code> attribute is given with the
700: double-quoted attribute value syntax:</p>
701:
702: <pre><input <em>name="be evil"</em>></pre>
703:
704: </div>
705:
706: <p>If an attribute using the double-quoted attribute syntax is to
707: be followed by another attribute, then there must be a <a href="infrastructure.html#space-character">space
708: character</a> separating the two.</p>
709:
710: </dd>
711:
712: </dl><p>There must never be two or more attributes on the same start tag
713: whose names are an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match for
1.462 mike 714: each other.</p><hr><p>When a <a href="#foreign-elements" title="foreign elements">foreign element</a> has
715: one of the namespaced attributes given by the local name and
716: namespace of the first and second cells of a row from the following
717: table, it must be written using the name given by the third cell
718: from the same row.</p><table><thead><tr><th> Local name </th><th> Namespace </th><th> Attribute name
1.724 mike 719: </th></tr></thead><tbody><tr><td> <code title="">actuate</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:actuate</code>
720: </td></tr><tr><td> <code title="">arcrole</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:arcrole</code>
721: </td></tr><tr><td> <code title="">href</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:href</code>
722: </td></tr><tr><td> <code title="">role</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:role</code>
723: </td></tr><tr><td> <code title="">show</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:show</code>
724: </td></tr><tr><td> <code title="">title</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:title</code>
725: </td></tr><tr><td> <code title="">type</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a> </td><td> <code title="">xlink:type</code>
726: </td></tr><tr><td> <code title="">base</code> </td><td> <a href="infrastructure.html#xml-namespace">XML namespace</a> <!-- attr-xml-base --> </td><td> <code title="">xml:base</code>
727: </td></tr><tr><td> <code title="">lang</code> </td><td> <a href="infrastructure.html#xml-namespace">XML namespace</a> </td><td> <code title="">xml:lang</code>
728: </td></tr><tr><td> <code title="">space</code> </td><td> <a href="infrastructure.html#xml-namespace">XML namespace</a> </td><td> <code title="">xml:space</code>
729: </td></tr><tr><td> <code title="">xmlns</code> </td><td> <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a> </td><td> <code title="">xmlns</code>
730: </td></tr><tr><td> <code title="">xlink</code> </td><td> <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a> </td><td> <code title="">xmlns:xlink</code>
1.671 mike 731: </td></tr></tbody></table><p>No other namespaced attribute can be expressed in <a href="#syntax">the
1.755 mike 732: HTML syntax</a>.</p><h5 id="optional-tags"><span class="secno">8.1.2.4 </span>Optional tags</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p>Certain tags can be <dfn id="syntax-tag-omission" title="syntax-tag-omission">omitted</dfn>.</p><p class="note">Omitting an element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> does not mean the element
1.1 mike 733: is not present; it is implied, but it is still there. An HTML
1.159 mike 734: document always has a root <code><a href="semantics.html#the-html-element-0">html</a></code> element, even if the
1.1 mike 735: string <code title=""><html></code> doesn't appear anywhere in
1.159 mike 736: the markup.</p><!-- <html> --><p>An <code><a href="semantics.html#the-html-element-0">html</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted if the
737: first thing inside the <code><a href="semantics.html#the-html-element-0">html</a></code> element is not a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- </html> --><p>An <code><a href="semantics.html#the-html-element-0">html</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
738: tag</a> may be omitted if the <code><a href="semantics.html#the-html-element-0">html</a></code> element is not
1.821 mike 739: immediately followed by a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- <head> --><p>A <code><a href="semantics.html#the-head-element-0">head</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted if the
740: element is empty, or if the first thing inside the
1.159 mike 741: <code><a href="semantics.html#the-head-element-0">head</a></code> element is an element.</p><!-- </head> --><p>A <code><a href="semantics.html#the-head-element-0">head</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
742: tag</a> may be omitted if the <code><a href="semantics.html#the-head-element-0">head</a></code> element is not
743: immediately followed by a <a href="infrastructure.html#space-character">space character</a> or a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- <body> --><p>A <code><a href="semantics.html#the-body-element-0">body</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted if the
744: element is empty, or if the first thing inside the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 745: element is not a <a href="infrastructure.html#space-character">space character</a> or a <a href="#syntax-comments" title="syntax-comments">comment</a>, except if the first thing
1.159 mike 746: inside the <code><a href="semantics.html#the-body-element-0">body</a></code> element is a <code><a href="semantics.html#script">script</a></code> or
1.1 mike 747: <code><a href="semantics.html#the-style-element">style</a></code> element. <!-- Note that even if the </head> end
1.872 mike 748: tag is present, the parser makes <style type="text/css"> and <script type="text/javascript"> elements
1.1 mike 749: between </head> and <body> end up in the <head> instead of implying
1.159 mike 750: the <body> --></p><!-- </body> --><p>A <code><a href="semantics.html#the-body-element-0">body</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
751: tag</a> may be omitted if the <code><a href="semantics.html#the-body-element-0">body</a></code> element is not
1.123 mike 752: immediately followed by a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- </li> --><p>A <code><a href="semantics.html#the-li-element">li</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 753: tag</a> may be omitted if the <code><a href="semantics.html#the-li-element">li</a></code> element is
754: immediately followed by another <code><a href="semantics.html#the-li-element">li</a></code> element or if there
1.422 mike 755: is no more content in the parent element.</p><!-- </dt> --><p>A <code><a href="semantics.html#the-dt-element">dt</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 756: tag</a> may be omitted if the <code><a href="semantics.html#the-dt-element">dt</a></code> element is
757: immediately followed by another <code><a href="semantics.html#the-dt-element">dt</a></code> element or a
1.123 mike 758: <code><a href="semantics.html#the-dd-element">dd</a></code> element.</p><!-- </dd> --><p>A <code><a href="semantics.html#the-dd-element">dd</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 759: tag</a> may be omitted if the <code><a href="semantics.html#the-dd-element">dd</a></code> element is
760: immediately followed by another <code><a href="semantics.html#the-dd-element">dd</a></code> element or a
761: <code><a href="semantics.html#the-dt-element">dt</a></code> element, or if there is no more content in the
1.123 mike 762: parent element.</p><!-- </p> --><p>A <code><a href="semantics.html#the-p-element">p</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 763: tag</a> may be omitted if the <code><a href="semantics.html#the-p-element">p</a></code> element is
764: immediately followed by an <code><a href="semantics.html#the-address-element">address</a></code>,
765: <code><a href="semantics.html#the-article-element">article</a></code>, <code><a href="semantics.html#the-aside-element">aside</a></code>, <code><a href="semantics.html#the-blockquote-element">blockquote</a></code>,
1.305 mike 766: <!--v2DATAGRID <code>datagrid</code>,--> <code><a href="obsolete.html#dir">dir</a></code>,
1.306 mike 767: <code><a href="semantics.html#the-div-element">div</a></code>, <code><a href="semantics.html#the-dl-element">dl</a></code>, <code><a href="forms.html#the-fieldset-element">fieldset</a></code>,
1.305 mike 768: <code><a href="semantics.html#the-footer-element">footer</a></code>, <code><a href="forms.html#the-form-element">form</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h1</a></code>,
769: <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h2</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h3</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h4</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h5</a></code>,
770: <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h6</a></code>, <code><a href="semantics.html#the-header-element">header</a></code>, <code><a href="semantics.html#the-hgroup-element">hgroup</a></code>,
771: <code><a href="semantics.html#the-hr-element">hr</a></code>, <code><a href="interactive-elements.html#menus">menu</a></code>, <code><a href="semantics.html#the-nav-element">nav</a></code>,
772: <code><a href="semantics.html#the-ol-element">ol</a></code>, <code><a href="semantics.html#the-p-element">p</a></code>, <code><a href="semantics.html#the-pre-element">pre</a></code>,
1.1 mike 773: <code><a href="semantics.html#the-section-element">section</a></code>, <code><a href="tabular-data.html#the-table-element">table</a></code>, or <code><a href="semantics.html#the-ul-element">ul</a></code>,
774: element, or if there is no more content in the parent element and
1.123 mike 775: the parent element is not an <code><a href="text-level-semantics.html#the-a-element">a</a></code> element.</p><!-- </rt> --><p>An <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 776: tag</a> may be omitted if the <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> element is
777: immediately followed by an <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> or <code><a href="text-level-semantics.html#the-rp-element">rp</a></code>
1.123 mike 778: element, or if there is no more content in the parent element.</p><!-- </rp> --><p>An <code><a href="text-level-semantics.html#the-rp-element">rp</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 779: tag</a> may be omitted if the <code><a href="text-level-semantics.html#the-rp-element">rp</a></code> element is
780: immediately followed by an <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> or <code><a href="text-level-semantics.html#the-rp-element">rp</a></code>
1.123 mike 781: element, or if there is no more content in the parent element.</p><!-- </optgroup> (the text assumes <optgroup> can only be inside a
1.1 mike 782: <select>; commented out text below can handle the non-<select> case
1.123 mike 783: if we ever allow it) --><p>An <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end tag</a> may be omitted if the
1.1 mike 784: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element <!--has an ancestor
785: <code>select</code> element and--> is immediately followed by
786: another <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, or if <!--all of the elements
787: that are ancestors of the <code>optgroup</code> element, up to and
788: including the first ancestor element that is not an
789: <code>optgroup</code> element, have no more content--> there is no
1.123 mike 790: more content in the parent element.</p><!-- so e.g. the max number of </optgroup>s are omitted here:
1.1 mike 791: <select><optgroup></select>
792: <p id=x><optgroup></optgroup>x</p>
793: <p id=x><optgroup><optgroup></optgroup></optgroup>x</p>
794: <p><optgroup id=x><optgroup></optgroup>x</p>
795: <p><optgroup><optgroup id=x>x</p>
1.123 mike 796: --><!-- </option> --><p>An <code><a href="forms.html#the-option-element">option</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 797: tag</a> may be omitted if the <code><a href="forms.html#the-option-element">option</a></code> element is
798: immediately followed by another <code><a href="forms.html#the-option-element">option</a></code> element, or if
799: it is immediately followed by an <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, or
1.123 mike 800: if there is no more content in the parent element.</p><!-- <colgroup> --><p>A <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted if the
1.1 mike 801: first thing inside the <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element is a
802: <code><a href="tabular-data.html#the-col-element">col</a></code> element, and if the element is not immediately
803: preceded by another <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element whose <a href="#syntax-end-tag" title="syntax-end-tag">end tag</a> has been omitted. (It can't be
1.123 mike 804: omitted if the element is empty.)</p><!-- </colgroup> --><p>A <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end tag</a> may be omitted if the
1.1 mike 805: <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element is not immediately followed by a
1.123 mike 806: <a href="infrastructure.html#space-character">space character</a> or a <a href="#syntax-comments" title="syntax-comments">comment</a>.</p><!-- </thead> --><p>A <code><a href="tabular-data.html#the-thead-element">thead</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 807: tag</a> may be omitted if the <code><a href="tabular-data.html#the-thead-element">thead</a></code> element is
808: immediately followed by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> or <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>
1.123 mike 809: element.</p><!-- <tbody> --><p>A <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element's <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> may be omitted if the
1.1 mike 810: first thing inside the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element is a
811: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, and if the element is not immediately
812: preceded by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>, <code><a href="tabular-data.html#the-thead-element">thead</a></code>, or
813: <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element whose <a href="#syntax-end-tag" title="syntax-end-tag">end
814: tag</a> has been omitted. (It can't be omitted if the element is
1.123 mike 815: empty.)</p><!-- </tbody> --><p>A <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 816: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element is
817: immediately followed by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> or <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>
1.123 mike 818: element, or if there is no more content in the parent element.</p><!-- </tfoot> --><p>A <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 819: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element is
820: immediately followed by a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element, or if there is
1.123 mike 821: no more content in the parent element.</p><!-- </tr> --><p>A <code><a href="tabular-data.html#the-tr-element">tr</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 822: tag</a> may be omitted if the <code><a href="tabular-data.html#the-tr-element">tr</a></code> element is
823: immediately followed by another <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, or if there
1.123 mike 824: is no more content in the parent element.</p><!-- </td> --><p>A <code><a href="tabular-data.html#the-td-element">td</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 825: tag</a> may be omitted if the <code><a href="tabular-data.html#the-td-element">td</a></code> element is
826: immediately followed by a <code><a href="tabular-data.html#the-td-element">td</a></code> or <code><a href="tabular-data.html#the-th-element">th</a></code>
1.123 mike 827: element, or if there is no more content in the parent element.</p><!-- </th> --><p>A <code><a href="tabular-data.html#the-th-element">th</a></code> element's <a href="#syntax-end-tag" title="syntax-end-tag">end
1.1 mike 828: tag</a> may be omitted if the <code><a href="tabular-data.html#the-th-element">th</a></code> element is
829: immediately followed by a <code><a href="tabular-data.html#the-td-element">td</a></code> or <code><a href="tabular-data.html#the-th-element">th</a></code>
1.123 mike 830: element, or if there is no more content in the parent element.</p><p><strong>However</strong>, a <a href="#syntax-start-tag" title="syntax-start-tag">start
1.755 mike 831: tag</a> must never be omitted if it has any attributes.</p><h5 id="element-restrictions"><span class="secno">8.1.2.5 </span>Restrictions on content models</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p>For historical reasons, certain elements have extra restrictions
1.123 mike 832: beyond even the restrictions given by their content model.</p><p>A <code><a href="tabular-data.html#the-table-element">table</a></code> element must not contain <code><a href="tabular-data.html#the-tr-element">tr</a></code>
1.1 mike 833: elements, even though these elements are technically allowed inside
834: <code><a href="tabular-data.html#the-table-element">table</a></code> elements according to the content models
835: described in this specification. (If a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element is
836: put inside a <code><a href="tabular-data.html#the-table-element">table</a></code> in the markup, it will in fact imply
1.304 mike 837: a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> start tag before it.)</p><p>A single <a href="#syntax-newlines" title="syntax-newlines">newline</a> may be
838: placed immediately after the <a href="#syntax-start-tag" title="syntax-start-tag">start
1.1 mike 839: tag</a> of <code><a href="semantics.html#the-pre-element">pre</a></code> and <code><a href="forms.html#the-textarea-element">textarea</a></code>
840: elements. This does not affect the processing of the element. The
1.304 mike 841: otherwise optional <a href="#syntax-newlines" title="syntax-newlines">newline</a>
1.381 mike 842: <em>must</em> be included if the element's contents themselves start
843: with a <a href="#syntax-newlines" title="syntax-newlines">newline</a> (because
844: otherwise the leading newline in the contents would be treated like
845: the optional newline, and ignored).</p><div class="example">
1.1 mike 846: <p>The following two <code><a href="semantics.html#the-pre-element">pre</a></code> blocks are equivalent:</p>
847: <pre><pre>Hello</pre></pre>
848: <pre><pre><br>Hello</pre></pre>
1.755 mike 849: </div><h5 id="cdata-rcdata-restrictions"><span class="secno">8.1.2.6 </span>Restrictions on the contents of raw text and RCDATA elements</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p>The text in <a href="#raw-text-elements" title="raw text elements">raw text</a> and
1.889 ! mike 850: <a href="#rcdata-elements">RCDATA elements</a> must not contain any occurrences of the
! 851: string "<code title=""></</code>" (U+003C LESS-THAN SIGN, U+002F
! 852: SOLIDUS) followed by characters that case-insensitively match the
! 853: tag name of the element followed by one of U+0009 CHARACTER
! 854: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF), U+000D
! 855: CARRIAGE RETURN (CR), U+0020 SPACE, U+003E GREATER-THAN SIGN (>), or
! 856: U+002F SOLIDUS (/).</p><h4 id="text-0"><span class="secno">8.1.3 </span>Text</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p><dfn id="syntax-text" title="syntax-text">Text</dfn> is allowed inside elements,
1.1 mike 857: attributes, and comments. Text must consist of Unicode characters.
858: Text must not contain U+0000 characters. Text must not contain
1.316 mike 859: permanently undefined Unicode characters (noncharacters). Text must
860: not contain control characters other than <a href="infrastructure.html#space-character" title="space
861: character">space characters</a>. Extra constraints are placed on
862: what is and what is not allowed in text based on where the text is
1.755 mike 863: to be put, as described in the other sections.</p><h5 id="newlines"><span class="secno">8.1.3.1 </span>Newlines</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p><dfn id="syntax-newlines" title="syntax-newlines">Newlines</dfn> in HTML may be
1.1 mike 864: represented either as U+000D CARRIAGE RETURN (CR) characters, U+000A
865: LINE FEED (LF) characters, or pairs of U+000D CARRIAGE RETURN (CR),
1.882 mike 866: U+000A LINE FEED (LF) characters in that order.</p><p>Where <a href="#syntax-charref" title="syntax-charref">character references</a>
867: are allowed, a character reference of a U+000A LINE FEED (LF)
868: character (but not a U+000D CARRIAGE RETURN (CR) character) also
869: represents a <a href="#syntax-newlines" title="syntax-newlines">newline</a>.</p><h4 id="character-references"><span class="secno">8.1.4 </span>Character references</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p>In certain cases described in other sections, <a href="#syntax-text" title="syntax-text">text</a> may be mixed with <dfn id="syntax-charref" title="syntax-charref">character references</dfn>. These can be used
1.1 mike 870: to escape characters that couldn't otherwise legally be included in
1.588 mike 871: <a href="#syntax-text" title="syntax-text">text</a>.</p><p>Character references must start with a U+0026 AMPERSAND character
872: (&). Following this, there are three possible kinds of character
873: references:</p><dl><dt>Named character references</dt>
1.1 mike 874:
875: <dd>The ampersand must be followed by one of the names given in the
876: <a href="named-character-references.html#named-character-references">named character references</a> section, using the same
1.677 mike 877: case. <span class="impl">The name must be one that is terminated by
878: a U+003B SEMICOLON character (;).</span></dd>
1.1 mike 879:
880:
881: <dt>Decimal numeric character reference</dt>
882:
883: <dd>The ampersand must be followed by a U+0023 NUMBER SIGN
1.588 mike 884: character (#), followed by one or more digits in the range U+0030
885: DIGIT ZERO (0) to U+0039 DIGIT NINE (9), representing a base-ten
886: integer that corresponds to a Unicode code point that is allowed
887: according to the definition below. The digits must then be followed
888: by a U+003B SEMICOLON character (;).</dd>
1.1 mike 889:
890:
891: <dt>Hexadecimal numeric character reference</dt>
892:
893: <dd>The ampersand must be followed by a U+0023 NUMBER SIGN
1.588 mike 894: character (#), which must be followed by either a U+0078 LATIN
895: SMALL LETTER X character (x) or a U+0058 LATIN CAPITAL LETTER X
896: character (X), which must then be followed by one or more digits in
897: the range U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0061
898: LATIN SMALL LETTER A to U+0066 LATIN SMALL LETTER F, and U+0041
899: LATIN CAPITAL LETTER A to U+0046 LATIN CAPITAL LETTER F,
1.464 mike 900: representing a base-sixteen integer that corresponds to a Unicode
901: code point that is allowed according to the definition below. The
902: digits must then be followed by a U+003B SEMICOLON character
903: (;).</dd>
1.378 mike 904:
905: </dl><p>The numeric character reference forms described above are allowed
1.882 mike 906: to reference any Unicode code point other than U+0000, U+000D,
907: permanently undefined Unicode characters (noncharacters), and
908: control characters other than <a href="infrastructure.html#space-character" title="space character">space
1.378 mike 909: characters</a>.</p><p>An <dfn id="syntax-ambiguous-ampersand" title="syntax-ambiguous-ampersand">ambiguous
1.464 mike 910: ampersand</dfn> is a U+0026 AMPERSAND character (&) that is
911: followed by some <a href="#syntax-text" title="syntax-text">text</a> other than a
912: <a href="infrastructure.html#space-character">space character</a>, a U+003C LESS-THAN SIGN character
1.755 mike 913: (<), or another U+0026 AMPERSAND character (&).</p><h4 id="cdata-sections"><span class="secno">8.1.5 </span>CDATA sections</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p><dfn id="syntax-cdata" title="syntax-cdata">CDATA sections</dfn> must start with
1.1 mike 914: the character sequence U+003C LESS-THAN SIGN, U+0021 EXCLAMATION
915: MARK, U+005B LEFT SQUARE BRACKET, U+0043 LATIN CAPITAL LETTER C,
916: U+0044 LATIN CAPITAL LETTER D, U+0041 LATIN CAPITAL LETTER A, U+0054
917: LATIN CAPITAL LETTER T, U+0041 LATIN CAPITAL LETTER A, U+005B LEFT
918: SQUARE BRACKET (<code title=""><![CDATA[</code>). Following this
919: sequence, the CDATA section may have <a href="#syntax-text" title="syntax-text">text</a>, with the additional restriction
920: that the text must not contain the three character sequence U+005D
921: RIGHT SQUARE BRACKET, U+005D RIGHT SQUARE BRACKET, U+003E
922: GREATER-THAN SIGN (<code title="">]]></code>). Finally, the CDATA
923: section must be ended by the three character sequence U+005D RIGHT
924: SQUARE BRACKET, U+005D RIGHT SQUARE BRACKET, U+003E GREATER-THAN
1.724 mike 925: SIGN (<code title="">]]></code>).</p><div class="example">
926:
927: <p>CDATA sections can only be used in foreign content (MathML or
928: SVG). In this example, a CDATA section is used to escape the
929: contents of an <code>ms</code> element:</p>
930:
931: <pre><p>You can add a string to a number, but this stringifies the number:</p>
932: <math>
933: <ms><![CDATA[x<y]]></ms>
934: <mo>+</mo>
935: <mn>3</mn>
936: <mo>=</mo>
937: <ms><![CDATA[x<y3]]></ms>
938: </math></pre>
939:
1.755 mike 940: </div><h4 id="comments"><span class="secno">8.1.6 </span>Comments</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p><p><dfn id="syntax-comments" title="syntax-comments">Comments</dfn> must start with the
1.1 mike 941: four character sequence U+003C LESS-THAN SIGN, U+0021 EXCLAMATION
942: MARK, U+002D HYPHEN-MINUS, U+002D HYPHEN-MINUS (<code title=""><!--</code>). Following this sequence, the comment may
943: have <a href="#syntax-text" title="syntax-text">text</a>, with the additional
944: restriction that the text must not start with a single U+003E
1.588 mike 945: GREATER-THAN SIGN character (>), nor start with a U+002D
946: HYPHEN-MINUS character (-) followed by a U+003E GREATER-THAN SIGN
947: (>) character, nor contain two consecutive U+002D HYPHEN-MINUS
948: characters (<code title="">--</code>), nor end with a U+002D
949: HYPHEN-MINUS character (-). Finally, the comment must be ended by
1.1 mike 950: the three character sequence U+002D HYPHEN-MINUS, U+002D
1.123 mike 951: HYPHEN-MINUS, U+003E GREATER-THAN SIGN (<code title="">--></code>).</p><div class="impl">
1.1 mike 952:
1.755 mike 953: <h3 id="parsing"><span class="secno">8.2 </span>Parsing HTML documents</h3><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 954:
955: <p><i>This section only applies to user agents, data mining tools,
956: and conformance checkers.</i></p>
957:
958: <p class="note">The rules for parsing XML documents into DOM trees
959: are covered by the next section, entitled "<a href="the-xhtml-syntax.html#the-xhtml-syntax">The XHTML
960: syntax</a>".</p>
961:
962: <p>For <a href="dom.html#html-documents">HTML documents</a>, user agents must use the parsing
963: rules described in this section to generate the DOM trees. Together,
964: these rules define what is referred to as the <dfn id="html-parser">HTML
965: parser</dfn>.</p>
966:
967: <div class="note">
968:
969: <p>While the HTML syntax described in this specification bears a
970: close resemblance to SGML and XML, it is a separate language with
971: its own parsing rules.</p>
972:
1.183 mike 973: <p>Some earlier versions of HTML (in particular from HTML2 to
974: HTML4) were based on SGML and used SGML parsing rules. However, few
1.1 mike 975: (if any) web browsers ever implemented true SGML parsing for HTML
976: documents; the only user agents to strictly handle HTML as an SGML
977: application have historically been validators. The resulting
978: confusion — with validators claiming documents to have one
979: representation while widely deployed Web browsers interoperably
980: implemented a different representation — has wasted decades
981: of productivity. This version of HTML thus returns to a non-SGML
982: basis.</p>
983:
984: <p>Authors interested in using SGML tools in their authoring
985: pipeline are encouraged to use XML tools and the XML serialization
986: of HTML.</p>
987:
988: </div>
989:
990: <p>This specification defines the parsing rules for HTML documents,
991: whether they are syntactically correct or not. Certain points in the
992: parsing algorithm are said to be <dfn id="parse-error" title="parse error">parse
993: errors</dfn>. The error handling for parse errors is well-defined:
994: user agents must either act as described below when encountering
995: such problems, or must abort processing at the first error that they
996: encounter for which they do not wish to apply the rules described
997: below.</p>
998:
999: <p>Conformance checkers must report at least one parse error
1000: condition to the user if one or more parse error conditions exist in
1001: the document and must not report parse error conditions if none
1002: exist in the document. Conformance checkers may report more than one
1.174 mike 1003: parse error condition if more than one parse error condition exists
1.1 mike 1004: in the document. Conformance checkers are not required to recover
1005: from parse errors.</p>
1006:
1007: <p class="note">Parse errors are only errors with the
1008: <em>syntax</em> of HTML. In addition to checking for parse errors,
1009: conformance checkers will also verify that the document obeys all
1010: the other conformance requirements described in this
1011: specification.</p>
1012:
1013: <p>For the purposes of conformance checkers, if a resource is
1014: determined to be in <a href="#syntax">the HTML syntax</a>, then it is an
1015: <a href="dom.html#html-documents" title="HTML documents">HTML document</a>.</p>
1016:
1.266 mike 1017: </div><div class="impl">
1.1 mike 1018:
1.755 mike 1019: <h4 id="overview-of-the-parsing-model"><span class="secno">8.2.1 </span>Overview of the parsing model</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1020:
1021: <p>The input to the HTML parsing process consists of a stream of
1022: Unicode characters, which is passed through a
1023: <a href="#tokenization">tokenization</a> stage followed by a <a href="#tree-construction">tree
1.810 mike 1024: construction</a> stage. The output is a <code><a href="infrastructure.html#document">Document</a></code>
1.1 mike 1025: object.</p>
1026:
1027: <p class="note">Implementations that <a href="infrastructure.html#non-scripted">do not
1028: support scripting</a> do not have to actually create a DOM
1.810 mike 1029: <code><a href="infrastructure.html#document">Document</a></code> object, but the DOM tree in such cases is
1.1 mike 1030: still used as the model for the rest of the specification.</p>
1031:
1032: <p>In the common case, the data handled by the tokenization stage
1.159 mike 1033: comes from the network, but <a href="embedded-content-0.html#dynamic-markup-insertion" title="dynamic markup
1034: insertion">it can also come from script</a>, e.g. using the <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code> API.</p>
1.1 mike 1035:
1.724 mike 1036: <p><img alt="" src="http://dev.w3.org/html5/spec/images/parsing-model-overview.png"></p>
1.1 mike 1037:
1038: <p id="nestedParsing">There is only one set of states for the
1039: tokenizer stage and the tree construction stage, but the tree
1040: construction stage is reentrant, meaning that while the tree
1041: construction stage is handling one token, the tokenizer might be
1042: resumed, causing further tokens to be emitted and processed before
1043: the first token's processing is complete.</p>
1044:
1045: <div class="example">
1046:
1047: <p>In the following example, the tree construction stage will be
1048: called upon to handle a "p" start tag token while handling the
1049: "script" start tag token:</p>
1050:
1051: <pre>...
1052: <script>
1053: document.write('<p>');
1054: </script>
1055: ...</pre>
1056:
1057: </div>
1058:
1059: <p>To handle these cases, parsers have a <dfn id="script-nesting-level">script nesting
1060: level</dfn>, which must be initially set to zero, and a <dfn id="parser-pause-flag">parser
1061: pause flag</dfn>, which must be initially set to false.</p>
1062:
1.266 mike 1063: </div><div class="impl">
1.1 mike 1064:
1.755 mike 1065: <h4 id="the-input-stream"><span class="secno">8.2.2 </span>The <dfn>input stream</dfn></h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1066:
1067: <p>The stream of Unicode characters that comprises the input to the
1068: tokenization stage will be initially seen by the user agent as a
1069: stream of bytes (typically coming over the network or from the local
1070: file system). The bytes encode the actual characters according to a
1071: particular <em>character encoding</em>, which the user agent must
1072: use to decode the bytes into characters.</p>
1073:
1074: <p class="note">For XML documents, the algorithm user agents must
1075: use to determine the character encoding is given by the XML
1.104 mike 1076: specification. This section does not apply to XML documents. <a href="references.html#refsXML">[XML]</a></p>
1.1 mike 1077:
1078:
1.755 mike 1079: <h5 id="determining-the-character-encoding"><span class="secno">8.2.2.1 </span>Determining the character encoding</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1080:
1081: <p>In some cases, it might be impractical to unambiguously determine
1082: the encoding before parsing the document. Because of this, this
1083: specification provides for a two-pass mechanism with an optional
1084: pre-scan. Implementations are allowed, as described below, to apply
1085: a simplified parsing algorithm to whatever bytes they have available
1086: before beginning to parse the document. Then, the real parser is
1087: started, using a tentative encoding derived from this pre-parse and
1088: other out-of-band metadata. If, while the document is being loaded,
1089: the user agent discovers an encoding declaration that conflicts with
1090: this information, then the parser can get reinvoked to perform a
1091: parse of the document with the real encoding.</p>
1092:
1093: <p id="documentEncoding">User agents must use the following
1094: algorithm (the <dfn id="encoding-sniffing-algorithm">encoding sniffing algorithm</dfn>) to determine
1095: the character encoding to use when decoding a document in the first
1096: pass. This algorithm takes as input any out-of-band metadata
1097: available to the user agent (e.g. the <a href="infrastructure.html#content-type" title="Content-Type">Content-Type metadata</a> of the document)
1098: and all the bytes available so far, and returns an encoding and a
1099: <dfn id="concept-encoding-confidence" title="concept-encoding-confidence">confidence</dfn>. The
1100: confidence is either <i>tentative</i>, <i>certain</i>, or
1101: <i>irrelevant</i>. The encoding used, and whether the confidence in
1102: that encoding is <i>tentative</i> or <i>certain</i>, is <a href="#meta-charset-during-parse">used during the parsing</a> to
1103: determine whether to <a href="#change-the-encoding">change the encoding</a>. If no
1104: encoding is necessary, e.g. because the parser is operating on a
1105: stream of Unicode characters and doesn't have to use an encoding at
1106: all, then the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
1107: <i>irrelevant</i>.</p>
1108:
1109: <ol><li><p>If the transport layer specifies an encoding, and it is
1110: supported, return that encoding with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1111: <i>certain</i>, and abort these steps.</p></li>
1112:
1113: <li><p>The user agent may wait for more bytes of the resource to be
1114: available, either in this step or at any later step in this
1115: algorithm. For instance, a user agent might wait 500ms or 512
1116: bytes, whichever came first. In general preparsing the source to
1117: find the encoding improves performance, as it reduces the need to
1118: throw away the data structures used when parsing upon finding the
1119: encoding information. However, if the user agent delays too long to
1120: obtain data to determine the encoding, then the cost of the delay
1121: could outweigh any performance improvements from the
1122: preparse.</p></li>
1123:
1124: <li><p>For each of the rows in the following table, starting with
1125: the first one and going down, if there are as many or more bytes
1126: available than the number of bytes in the first column, and the
1127: first bytes of the file match the bytes given in the first column,
1128: then return the encoding given in the cell in the second column of
1129: that row, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1130: <i>certain</i>, and abort these steps:</p>
1131:
1132: <!-- this table is present in several forms in this file; keep them in sync -->
1133: <table><thead><tr><th>Bytes in Hexadecimal
1134: </th><th>Encoding
1135: </th></tr></thead><tbody><!-- nobody uses this
1136: <tr>
1137: <td>00 00 FE FF
1138: <td>UTF-32BE
1139: <tr>
1140: <td>FF FE 00 00
1141: <td>UTF-32LE
1142: --><tr><td>FE FF
1143: </td><td>UTF-16BE
1144: </td></tr><tr><td>FF FE
1145: </td><td>UTF-16LE
1146: </td></tr><tr><td>EF BB BF
1147: </td><td>UTF-8
1148: <!-- nobody uses this
1149: <tr>
1150: <td>DD 73 66 73
1151: <td>UTF-EBCDIC
1152: -->
1153: </td></tr></tbody></table><p class="note">This step looks for Unicode Byte Order Marks
1154: (BOMs).</p></li>
1155:
1156: <li><p>Otherwise, the user agent will have to search for explicit
1157: character encoding information in the file itself. This should
1158: proceed as follows:
1159:
1160: </p><p>Let <var title="">position</var> be a pointer to a byte in the
1161: input stream, initially pointing at the first byte. If at any
1162: point during these substeps the user agent either runs out of
1163: bytes or decides that scanning further bytes would not be
1164: efficient, then skip to the next step of the overall character
1165: encoding detection algorithm. User agents may decide that scanning
1166: <em>any</em> bytes is not efficient, in which case these substeps
1167: are entirely skipped.</p>
1168:
1169: <p>Now, repeat the following "two" steps until the algorithm
1170: aborts (either because user agent aborts, as described above, or
1171: because a character encoding is found):</p>
1172:
1173: <ol><li><p>If <var title="">position</var> points to:</p>
1174:
1175: <dl class="switch"><dt>A sequence of bytes starting with: 0x3C 0x21 0x2D 0x2D (ASCII '<!--')</dt>
1176: <dd>
1177:
1178: <p>Advance the <var title="">position</var> pointer so that it
1179: points at the first 0x3E byte which is preceded by two 0x2D
1180: bytes (i.e. at the end of an ASCII '-->' sequence) and comes
1181: after the 0x3C byte that was found. (The two 0x2D bytes can be
1182: the same as the those in the '<!--' sequence.)</p>
1183:
1184: </dd>
1185:
1186: <dt>A sequence of bytes starting with: 0x3C, 0x4D or 0x6D, 0x45 or 0x65, 0x54 or 0x74, 0x41 or 0x61, and finally one of 0x09, 0x0A, 0x0C, 0x0D, 0x20, 0x2F (case-insensitive ASCII '<meta' followed by a space or slash)</dt>
1187: <dd>
1188:
1189: <ol><li><p>Advance the <var title="">position</var> pointer so
1190: that it points at the next 0x09, 0x0A, 0x0C, 0x0D, 0x20, or
1191: 0x2F byte (the one in sequence of characters matched
1192: above).</p></li>
1193:
1194: <li><p><a href="#concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">Get
1195: an attribute</a> and its value. If no attribute was
1196: sniffed, then skip this inner set of steps, and jump to the
1197: second step in the overall "two step" algorithm.</p></li>
1198:
1199: <li><p>If the attribute's name is neither "<code title="">charset</code>" nor "<code title="">content</code>",
1200: then return to step 2 in these inner steps.</p></li>
1201:
1202: <li><p>If the attribute's name is "<code title="">charset</code>", let <var title="">charset</var> be
1203: the attribute's value, interpreted as a character
1204: encoding.</p></li>
1205:
1206: <li><p>Otherwise, the attribute's name is "<code title="">content</code>": apply the <a href="infrastructure.html#algorithm-for-extracting-an-encoding-from-a-content-type">algorithm for
1207: extracting an encoding from a Content-Type</a>, giving the
1208: attribute's value as the string to parse. If an encoding is
1209: returned, let <var title="">charset</var> be that
1210: encoding. Otherwise, return to step 2 in these inner
1211: steps.</p></li>
1212:
1213: <li><p>If <var title="">charset</var> is a UTF-16 encoding,
1214: change the value of <var title="">charset</var> to
1215: UTF-8.</p></li>
1216:
1217: <li><p>If <var title="">charset</var> is a supported
1218: character encoding, then return the given encoding, with
1219: <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1220: <i>tentative</i>, and abort all these steps.</p></li>
1221:
1222: <li><p>Otherwise, return to step 2 in these inner
1223: steps.</p></li>
1224:
1225: </ol></dd>
1226:
1.464 mike 1227: <dt>A sequence of bytes starting with a 0x3C byte (ASCII <), optionally a 0x2F byte (ASCII /), and finally a byte in the range 0x41-0x5A or 0x61-0x7A (an ASCII letter)</dt>
1.1 mike 1228: <dd>
1229:
1230: <ol><li><p>Advance the <var title="">position</var> pointer so
1231: that it points at the next 0x09 (ASCII TAB), 0x0A (ASCII LF),
1232: 0x0C (ASCII FF), 0x0D (ASCII CR), 0x20 (ASCII space), or 0x3E
1.464 mike 1233: (ASCII >) byte.</p></li>
1.1 mike 1234:
1235: <li><p>Repeatedly <a href="#concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">get an
1236: attribute</a> until no further attributes can be found,
1237: then jump to the second step in the overall "two step"
1238: algorithm.</p></li>
1239:
1240: </ol></dd>
1241:
1242: <dt>A sequence of bytes starting with: 0x3C 0x21 (ASCII '<!')</dt>
1243: <dt>A sequence of bytes starting with: 0x3C 0x2F (ASCII '</')</dt>
1244: <dt>A sequence of bytes starting with: 0x3C 0x3F (ASCII '<?')</dt>
1245: <dd>
1246:
1247: <p>Advance the <var title="">position</var> pointer so that it
1.464 mike 1248: points at the first 0x3E byte (ASCII >) that comes after the
1.1 mike 1249: 0x3C byte that was found.</p>
1250:
1251: </dd>
1252:
1253: <dt>Any other byte</dt>
1254: <dd>
1255:
1256: <p>Do nothing with that byte.</p>
1257:
1258: </dd>
1259:
1260: </dl></li>
1261:
1262: <li>Move <var title="">position</var> so it points at the next
1263: byte in the input stream, and return to the first step of this
1264: "two step" algorithm.</li>
1265:
1266: </ol><p>When the above "two step" algorithm says to <dfn id="concept-get-attributes-when-sniffing" title="concept-get-attributes-when-sniffing">get an
1267: attribute</dfn>, it means doing this:</p>
1268:
1269: <ol><li><p>If the byte at <var title="">position</var> is one of 0x09
1270: (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII FF), 0x0D (ASCII CR),
1.464 mike 1271: 0x20 (ASCII space), or 0x2F (ASCII /) then advance <var title="">position</var> to the next byte and redo this
1.1 mike 1272: substep.</p></li>
1273:
1274: <li><p>If the byte at <var title="">position</var> is 0x3E (ASCII
1.464 mike 1275: >), then abort the "get an attribute" algorithm. There isn't
1.1 mike 1276: one.</p></li>
1277:
1278: <li><p>Otherwise, the byte at <var title="">position</var> is the
1279: start of the attribute name. Let <var title="">attribute
1280: name</var> and <var title="">attribute value</var> be the empty
1281: string.</p></li>
1282:
1283: <li><p><i>Attribute name</i>: Process the byte at <var title="">position</var> as follows:</p>
1284:
1.464 mike 1285: <dl class="switch"><dt>If it is 0x3D (ASCII =), and the <var title="">attribute
1.1 mike 1286: name</var> is longer than the empty string</dt>
1287:
1288: <dd>Advance <var title="">position</var> to the next byte and
1289: jump to the step below labeled <i>value</i>.</dd>
1290:
1291: <dt>If it is 0x09 (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII
1292: FF), 0x0D (ASCII CR), or 0x20 (ASCII space)</dt>
1293:
1294: <dd>Jump to the step below labeled <i>spaces</i>.</dd>
1295:
1.464 mike 1296: <dt>If it is 0x2F (ASCII /) or 0x3E (ASCII >)</dt>
1.1 mike 1297:
1298: <dd>Abort the "get an attribute" algorithm. The attribute's
1299: name is the value of <var title="">attribute name</var>, its
1300: value is the empty string.</dd>
1301:
1.464 mike 1302: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1303: Z)</dt>
1.1 mike 1304:
1305: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1306: name</var> (where <var title="">b</var> is the value of the
1307: byte at <var title="">position</var>).</dd>
1308:
1309: <dt>Anything else</dt>
1310:
1311: <dd>Append the Unicode character with the same code point as the
1312: value of the byte at <var title="">position</var>) to <var title="">attribute name</var>. (It doesn't actually matter how
1313: bytes outside the ASCII range are handled here, since only
1314: ASCII characters can contribute to the detection of a character
1315: encoding.)</dd>
1316:
1317: </dl></li>
1318:
1319: <li><p>Advance <var title="">position</var> to the next byte and
1320: return to the previous step.</p></li>
1321:
1322: <li><p><i>Spaces</i>: If the byte at <var title="">position</var> is one of 0x09 (ASCII TAB), 0x0A (ASCII
1323: LF), 0x0C (ASCII FF), 0x0D (ASCII CR), or 0x20 (ASCII space) then
1324: advance <var title="">position</var> to the next byte, then,
1325: repeat this step.</p></li>
1326:
1327: <li><p>If the byte at <var title="">position</var> is
1.464 mike 1328: <em>not</em> 0x3D (ASCII =), abort the "get an attribute"
1.1 mike 1329: algorithm. The attribute's name is the value of <var title="">attribute name</var>, its value is the empty
1330: string.</p></li>
1331:
1332: <li><p>Advance <var title="">position</var> past the 0x3D (ASCII
1.464 mike 1333: =) byte.</p></li>
1.1 mike 1334:
1335: <li><p><i>Value:</i> If the byte at <var title="">position</var> is one of 0x09 (ASCII TAB), 0x0A (ASCII
1336: LF), 0x0C (ASCII FF), 0x0D (ASCII CR), or 0x20 (ASCII space) then
1337: advance <var title="">position</var> to the next byte, then,
1338: repeat this step.</p></li>
1339:
1340: <li><p>Process the byte at <var title="">position</var> as
1341: follows:</p>
1342:
1.464 mike 1343: <dl class="switch"><dt>If it is 0x22 (ASCII ") or 0x27 (ASCII ')</dt>
1.1 mike 1344:
1345: <dd>
1346:
1347: <ol><li>Let <var title="">b</var> be the value of the byte at
1348: <var title="">position</var>.</li>
1349:
1350: <li>Advance <var title="">position</var> to the next
1351: byte.</li>
1352:
1353: <li>If the value of the byte at <var title="">position</var>
1354: is the value of <var title="">b</var>, then advance <var title="">position</var> to the next byte and abort the "get
1355: an attribute" algorithm. The attribute's name is the value of
1356: <var title="">attribute name</var>, and its value is the
1357: value of <var title="">attribute value</var>.</li>
1358:
1.464 mike 1359: <li>Otherwise, if the value of the byte at <var title="">position</var> is in the range 0x41 (ASCII A) to
1360: 0x5A (ASCII Z), then append a Unicode character to <var title="">attribute value</var> whose code point is 0x20 more
1.1 mike 1361: than the value of the byte at <var title="">position</var>.</li>
1362:
1363: <li>Otherwise, append a Unicode character to <var title="">attribute value</var> whose code point is the same as
1364: the value of the byte at <var title="">position</var>.</li>
1365:
1366: <li>Return to the second step in these substeps.</li>
1367:
1368: </ol></dd>
1369:
1.464 mike 1370: <dt>If it is 0x3E (ASCII >)</dt>
1.1 mike 1371:
1372: <dd>Abort the "get an attribute" algorithm. The attribute's
1373: name is the value of <var title="">attribute name</var>, its
1374: value is the empty string.</dd>
1375:
1376:
1.464 mike 1377: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1378: Z)</dt>
1.1 mike 1379:
1380: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1381: value</var> (where <var title="">b</var> is the value of the
1382: byte at <var title="">position</var>). Advance <var title="">position</var> to the next byte.</dd>
1383:
1384: <dt>Anything else</dt>
1385:
1386: <dd>Append the Unicode character with the same code point as the
1387: value of the byte at <var title="">position</var>) to <var title="">attribute value</var>. Advance <var title="">position</var> to the next byte.</dd>
1388:
1389: </dl></li>
1390:
1391: <li><p>Process the byte at <var title="">position</var> as
1392: follows:</p>
1393:
1394: <dl class="switch"><dt>If it is 0x09 (ASCII TAB), 0x0A (ASCII LF), 0x0C (ASCII
1395: FF), 0x0D (ASCII CR), 0x20 (ASCII space), or 0x3E (ASCII
1.464 mike 1396: >)</dt>
1.1 mike 1397:
1398: <dd>Abort the "get an attribute" algorithm. The attribute's
1399: name is the value of <var title="">attribute name</var> and its
1400: value is the value of <var title="">attribute value</var>.</dd>
1401:
1.464 mike 1402: <dt>If it is in the range 0x41 (ASCII A) to 0x5A (ASCII
1403: Z)</dt>
1.1 mike 1404:
1405: <dd>Append the Unicode character with code point <span title=""><var title="">b</var>+0x20</span> to <var title="">attribute
1406: value</var> (where <var title="">b</var> is the value of the
1407: byte at <var title="">position</var>).</dd>
1408:
1409: <dt>Anything else</dt>
1410:
1411: <dd>Append the Unicode character with the same code point as the
1412: value of the byte at <var title="">position</var>) to <var title="">attribute value</var>.</dd>
1413:
1414: </dl></li>
1415:
1416: <li><p>Advance <var title="">position</var> to the next byte and
1417: return to the previous step.</p></li>
1418:
1419: </ol><p>For the sake of interoperability, user agents should not use a
1420: pre-scan algorithm that returns different results than the one
1421: described above. (But, if you do, please at least let us know, so
1422: that we can improve this algorithm and benefit everyone...)</p>
1423:
1424: </li>
1425:
1426: <li><p>If the user agent has information on the likely encoding for
1427: this page, e.g. based on the encoding of the page when it was last
1428: visited, then return that encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1429: <i>tentative</i>, and abort these steps.</p></li>
1430:
1.322 mike 1431: <li>
1432:
1433: <p>The user agent may attempt to autodetect the character encoding
1434: from applying frequency analysis or other algorithms to the data
1.568 mike 1435: stream. Such algorithms may use information about the resource
1436: other than the resource's contents, including the address of the
1437: resource. If autodetection succeeds in determining a character
1.322 mike 1438: encoding, then return that encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1439: <i>tentative</i>, and abort these steps. <a href="references.html#refsUNIVCHARDET">[UNIVCHARDET]</a></p>
1440:
1441: <p class="note">The UTF-8 encoding has a highly detectable bit
1442: pattern. Documents that contain bytes with values greater than
1443: 0x7F which match the UTF-8 pattern are very likely to be UTF-8,
1444: while documents with byte sequences that do not match it are very
1445: likely not. User-agents are therefore encouraged to search for
1.485 mike 1446: this common encoding. <a href="references.html#refsPPUTF8">[PPUTF8]</a> <a href="references.html#refsUTF8DET">[UTF8DET]</a></p>
1.322 mike 1447:
1448: </li>
1.1 mike 1449:
1.501 mike 1450: <li>
1451:
1452: <p>Otherwise, return an implementation-defined or user-specified
1453: default character encoding, with the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a>
1454: <i>tentative</i>.</p>
1455:
1456: <p>In controlled environments or in environments where the
1457: encoding of documents can be prescribed (for example, for user
1458: agents intended for dedicated use in new networks), the
1459: comprehensive <code title="">UTF-8</code> encoding is
1460: suggested.</p>
1461:
1462: <p>In other environments, the default encoding is typically
1463: dependent on the user's locale (an approximation of the languages,
1.760 mike 1464: and thus often encodings, of the pages that the user is likely to
1465: frequent). The following table gives suggested defaults based on
1466: the user's locale, for compatibility with legacy content. Locales
1467: are identified by BCP 47 language codes. <a href="references.html#refsBCP47">[BCP47]</a></p>
1.501 mike 1468:
1469: <!-- based on mozilla 1.9.1 localizations:
1470: http://mxr.mozilla.org/l10n-mozilla1.9.1/find?string=global%2Fintl.properties&tree=l10n-mozilla1.9.1&hint= -->
1471:
1.504 mike 1472: <table><thead><tr><th>Locale language
1.501 mike 1473: </th><th>Suggested default encoding
1474: </th></tr></thead><tbody><tr><td>ar
1475: </td><td>UTF-8
1476:
1477: </td></tr><tr><td>be
1478: </td><td>ISO-8859-5
1479:
1480: </td></tr><tr><td>bg
1481: </td><td>windows-1251
1482:
1483: </td></tr><tr><td>cs<!-- -CZ -->
1484: </td><td>ISO-8859-2
1485:
1486: </td></tr><tr><td>cy
1487: </td><td>UTF-8
1488:
1489: </td></tr><tr><td>fa<!-- -IR -->
1490: </td><td>UTF-8
1491:
1492: </td></tr><tr><td>he<!-- -IL -->
1493: </td><td>windows-1255
1494:
1495: </td></tr><tr><td>hr
1496: </td><td>UTF-8
1497:
1498: </td></tr><tr><td>hu<!-- -HU -->
1499: </td><td>ISO-8859-2
1500:
1501: </td></tr><tr><td>ja <!-- and ja-JP-mac -->
1.863 mike 1502: </td><td>Windows-31J <!-- Shift_JIS -->
1.501 mike 1503:
1504: </td></tr><tr><td>kk
1505: </td><td>UTF-8
1506:
1507: </td></tr><tr><td>ko<!-- -KR -->
1508: </td><td>windows-949 <!-- EUC-KR -->
1509:
1510: </td></tr><tr><td>ku
1511: </td><td>windows-1254 <!-- ISO-8859-9 -->
1512:
1513: </td></tr><tr><td>lt
1514: </td><td>windows-1257
1515:
1516: </td></tr><tr><td>lv<!-- -LV -->
1517: </td><td>ISO-8859-13
1518:
1519: </td></tr><tr><td>mk<!-- -MK -->
1520: </td><td>UTF-8
1521:
1522: </td></tr><tr><td>or
1523: </td><td>UTF-8
1524:
1525: </td></tr><tr><td>pl<!-- -PL -->
1526: </td><td>ISO-8859-2
1527:
1528: </td></tr><tr><td>ro
1529: </td><td>UTF-8
1530:
1531: </td></tr><tr><td>ru
1532: </td><td>windows-1251
1533:
1534: </td></tr><tr><td>sk
1535: </td><td>windows-1250
1536:
1537: </td></tr><tr><td>sl
1538: </td><td>ISO-8859-2
1539:
1540: </td></tr><tr><td>sr
1541: </td><td>UTF-8
1542:
1543: </td></tr><tr><td>th
1544: </td><td>windows-874 <!-- TIS-620 -->
1545:
1546: </td></tr><tr><td>tr<!-- -TR -->
1547: </td><td>windows-1254 <!-- ISO-8859-9 -->
1548:
1.503 mike 1549: </td></tr><tr><td>uk
1.501 mike 1550: </td><td>windows-1251
1551:
1552: </td></tr><tr><td>vi
1553: </td><td>UTF-8
1554:
1555: </td></tr><tr><td>zh-CN
1556: </td><td>GB18030
1557:
1558: </td></tr><tr><td>zh-TW
1559: </td><td>Big5
1560:
1561: </td></tr><tr><td>All other locales
1562: </td><td>windows-1252
1563:
1564: </td></tr></tbody></table></li>
1.1 mike 1565:
1566: </ol><p>The <a href="dom.html#document-s-character-encoding">document's character encoding</a> must immediately
1567: be set to the value returned from this algorithm, at the same time
1568: as the user agent uses the returned value to select the decoder to
1569: use for the input stream.</p>
1570:
1.582 mike 1571: <p class="note">This algorithm is a <a href="introduction.html#willful-violation">willful violation</a>
1572: of the HTTP specification, which requires that the encoding be
1573: assumed to be ISO-8859-1 in the absence of a <a href="semantics.html#character-encoding-declaration">character
1.647 mike 1574: encoding declaration</a> to the contrary, and of RFC 2046,
1.582 mike 1575: which requires that the encoding be assumed to be US-ASCII in the
1576: absence of a <a href="semantics.html#character-encoding-declaration">character encoding declaration</a> to the
1577: contrary. This specification's third approach is motivated by a
1578: desire to be maximally compatible with legacy content. <a href="references.html#refsHTTP">[HTTP]</a> <a href="references.html#refsRFC2046">[RFC2046]</a></p>
1579:
1.1 mike 1580:
1.755 mike 1581: <h5 id="character-encodings-0"><span class="secno">8.2.2.2 </span>Character encodings</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1582:
1.237 mike 1583: <p>User agents must at a minimum support the UTF-8 and Windows-1252
1584: encodings, but may support more.</p>
1585:
1586: <p class="note">It is not unusual for Web browsers to support dozens
1587: if not upwards of a hundred distinct character encodings.</p>
1588:
1.365 mike 1589: <p>User agents must support the <a href="infrastructure.html#preferred-mime-name">preferred MIME name</a> of
1590: every character encoding they support, and should support all the
1591: IANA-registered names and aliases of every character encoding they
1592: support. <a href="references.html#refsIANACHARSET">[IANACHARSET]</a></p>
1.237 mike 1593:
1594: <p>When comparing a string specifying a character encoding with the
1595: name or alias of a character encoding to determine if they are
1596: equal, user agents must remove any leading or trailing <a href="infrastructure.html#space-character" title="space character">space characters</a> in both names, and
1597: then perform the comparison in an <a href="infrastructure.html#ascii-case-insensitive">ASCII
1598: case-insensitive</a> manner.</p>
1599:
1.539 mike 1600: <hr><p>When a user agent would otherwise use an encoding given in the
1.237 mike 1601: first column of the following table to either convert content to
1602: Unicode characters or convert Unicode characters to bytes, it must
1603: instead use the encoding given in the cell in the second column of
1604: the same row. When a byte or sequence of bytes is treated
1605: differently due to this encoding aliasing, it is said to have been
1606: <dfn id="misinterpreted-for-compatibility">misinterpreted for compatibility</dfn>.</p>
1607:
1608: <table><caption>Character encoding overrides</caption>
1609: <thead><tr><th> Input encoding </th><th> Replacement encoding </th><th> References
1610: </th></tr></thead><tbody><!-- how about EUC-JP? --><tr><td> EUC-KR </td><td> windows-949 </td><td>
1611: <a href="references.html#refsEUCKR">[EUCKR]</a>
1612: <a href="references.html#refsWIN949">[WIN949]</a>
1613: </td></tr><tr><td> GB2312 </td><td> GBK </td><td>
1614: <a href="references.html#refsRFC1345">[RFC1345]</a>
1615: <a href="references.html#refsGBK">[GBK]</a>
1616: </td></tr><tr><td> GB_2312-80 </td><td> GBK </td><td>
1617: <a href="references.html#refsRFC1345">[RFC1345]</a>
1618: <a href="references.html#refsGBK">[GBK]</a>
1619: </td></tr><tr><td> ISO-8859-1 </td><td> windows-1252 </td><td>
1620: <a href="references.html#refsRFC1345">[RFC1345]</a>
1621: <a href="references.html#refsWIN1252">[WIN1252]</a>
1622: </td></tr><tr><td> ISO-8859-9 </td><td> windows-1254 </td><td>
1623: <a href="references.html#refsRFC1345">[RFC1345]</a>
1624: <a href="references.html#refsWIN1254">[WIN1254]</a>
1625: </td></tr><tr><td> ISO-8859-11 </td><td> windows-874 </td><td>
1626: <a href="references.html#refsISO885911">[ISO885911]</a>
1627: <a href="references.html#refsWIN874">[WIN874]</a>
1628: </td></tr><tr><td> KS_C_5601-1987 </td><td> windows-949 </td><td>
1629: <a href="references.html#refsRFC1345">[RFC1345]</a>
1630: <a href="references.html#refsWIN949">[WIN949]</a>
1.863 mike 1631: </td></tr><tr><td> Shift_JIS </td><td> Windows-31J </td><td>
1.237 mike 1632: <a href="references.html#refsSHIFTJIS">[SHIFTJIS]</a>
1633: <a href="references.html#refsWIN31J">[WIN31J]</a>
1634: </td></tr><tr><td> TIS-620 </td><td> windows-874 </td><td>
1635: <a href="references.html#refsTIS620">[TIS620]</a>
1636: <a href="references.html#refsWIN874">[WIN874]</a>
1637: </td></tr><tr><td> US-ASCII </td><td> windows-1252 </td><td>
1638: <a href="references.html#refsRFC1345">[RFC1345]</a>
1639: <a href="references.html#refsWIN1252">[WIN1252]</a>
1640: </td></tr></tbody></table><p class="note">The requirement to treat certain encodings as other
1641: encodings according to the table above is a <a href="introduction.html#willful-violation">willful
1642: violation</a> of the W3C Character Model specification, motivated
1643: by a desire for compatibility with legacy content. <a href="references.html#refsCHARMOD">[CHARMOD]</a></p>
1644:
1645: <p>When a user agent is to use the UTF-16 encoding but no BOM has
1646: been found, user agents must default to UTF-16LE.</p>
1647:
1648: <p class="note">The requirement to default UTF-16 to LE rather than
1649: BE is a <a href="introduction.html#willful-violation">willful violation</a> of RFC 2781, motivated by a
1.581 mike 1650: desire for compatibility with legacy content. <a href="references.html#refsRFC2781">[RFC2781]</a></p>
1.237 mike 1651:
1652: <hr><p>User agents must not support the CESU-8, UTF-7, BOCU-1 and SCSU
1653: encodings. <a href="references.html#refsCESU8">[CESU8]</a> <a href="references.html#refsUTF7">[UTF7]</a> <a href="references.html#refsBOCU1">[BOCU1]</a> <a href="references.html#refsSCSU">[SCSU]</a></p>
1654:
1655: <p>Support for encodings based on EBCDIC is not recommended. This
1656: encoding is rarely used for publicly-facing Web content.</p>
1657:
1658: <p>Support for UTF-32 is not recommended. This encoding is rarely
1659: used, and frequently implemented incorrectly.</p>
1660:
1661: <p class="note">This specification does not make any attempt to
1662: support EBCDIC-based encodings and UTF-32 in its algorithms; support
1663: and use of these encodings can thus lead to unexpected behavior in
1664: implementations of this specification.</p>
1665:
1666:
1667:
1.755 mike 1668: <h5 id="preprocessing-the-input-stream"><span class="secno">8.2.2.3 </span>Preprocessing the input stream</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1669:
1670: <p>Given an encoding, the bytes in the input stream must be
1671: converted to Unicode characters for the tokenizer, as described by
1672: the rules for that encoding, except that the leading U+FEFF BYTE
1673: ORDER MARK character, if any, must not be stripped by the encoding
1674: layer (it is stripped by the rule below).</p> <!-- this is to
1675: prevent two leading BOMs from being both stripped, once by the
1676: decoder, and once by the parser -->
1677:
1678: <p>Bytes or sequences of bytes in the original byte stream that
1.393 mike 1679: could not be converted to Unicode code points must be converted to
1680: U+FFFD REPLACEMENT CHARACTERs.</p>
1.1 mike 1681:
1682: <p class="note">Bytes or sequences of bytes in the original byte
1683: stream that did not conform to the encoding specification
1684: (e.g. invalid UTF-8 byte sequences in a UTF-8 input stream) are
1685: errors that conformance checkers are expected to report.</p>
1686:
1.438 mike 1687: <p>Any byte or sequence of bytes in the original byte stream that is
1688: <a href="#misinterpreted-for-compatibility">misinterpreted for compatibility</a> is a <a href="#parse-error">parse
1.1 mike 1689: error</a>.</p>
1690:
1691: <p>One leading U+FEFF BYTE ORDER MARK character must be ignored if
1692: any are present.</p>
1693:
1.300 mike 1694: <p class="note">The requirement to strip a U+FEFF BYTE ORDER MARK
1695: character regardless of whether that character was used to determine
1696: the byte order is a <a href="introduction.html#willful-violation">willful violation</a> of Unicode,
1697: motivated by a desire to increase the resilience of user agents in
1698: the face of naïve transcoders.</p>
1699:
1.316 mike 1700: <p>All U+0000 NULL characters and code points in the range U+D800 to
1.315 mike 1701: U+DFFF<!-- surrogates not allowed e.g. in UTF-8, and we don't want
1702: them to suddenly turn into codepoints when they go through a UTF-16
1703: pipe --> in the input must be replaced by U+FFFD REPLACEMENT
1.316 mike 1704: CHARACTERs. Any occurrences of such characters and code points are
1705: <a href="#parse-error" title="parse error">parse errors</a>.</p>
1.1 mike 1706:
1707: <p>Any occurrences of any characters in the ranges U+0001 to U+0008,
1708: <!-- HT, LF allowed --> <!-- U+000B is in the next list --> <!-- FF,
1709: CR allowed --> U+000E to U+001F, <!-- ASCII allowed --> U+007F
1.315 mike 1710: <!--to U+0084, (U+0085 NEL not allowed), U+0086--> to U+009F, U+FDD0
1711: to U+FDEF, and characters U+000B, U+FFFE, U+FFFF, U+1FFFE, U+1FFFF,
1712: U+2FFFE, U+2FFFF, U+3FFFE, U+3FFFF, U+4FFFE, U+4FFFF, U+5FFFE,
1713: U+5FFFF, U+6FFFE, U+6FFFF, U+7FFFE, U+7FFFF, U+8FFFE, U+8FFFF,
1714: U+9FFFE, U+9FFFF, U+AFFFE, U+AFFFF, U+BFFFE, U+BFFFF, U+CFFFE,
1715: U+CFFFF, U+DFFFE, U+DFFFF, U+EFFFE, U+EFFFF, U+FFFFE, U+FFFFF,
1716: U+10FFFE, and U+10FFFF are <a href="#parse-error" title="parse error">parse
1.316 mike 1717: errors</a>. These are all control characters or permanently
1718: undefined Unicode characters (noncharacters).</p>
1.1 mike 1719:
1720: <p>U+000D CARRIAGE RETURN (CR) characters and U+000A LINE FEED (LF)
1721: characters are treated specially. Any CR characters that are
1722: followed by LF characters must be removed, and any CR characters not
1723: followed by LF characters must be converted to LF characters. Thus,
1724: newlines in HTML DOMs are represented by LF characters, and there
1725: are never any CR characters in the input to the
1726: <a href="#tokenization">tokenization</a> stage.</p>
1727:
1728: <p>The <dfn id="next-input-character">next input character</dfn> is the first character in the
1729: input stream that has not yet been <dfn id="consumed">consumed</dfn>. Initially,
1730: the <i><a href="#next-input-character">next input character</a></i> is the first character in the
1731: input. The <dfn id="current-input-character">current input character</dfn> is the last character
1732: to have been <i><a href="#consumed">consumed</a></i>.</p>
1733:
1734: <p>The <dfn id="insertion-point">insertion point</dfn> is the position (just before a
1735: character or just before the end of the input stream) where content
1.159 mike 1736: inserted using <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code> is actually
1.1 mike 1737: inserted. The insertion point is relative to the position of the
1738: character immediately after it, it is not an absolute offset into
1739: the input stream. Initially, the insertion point is
1.10 mike 1740: undefined.</p>
1.1 mike 1741:
1742: <p>The "EOF" character in the tables below is a conceptual character
1743: representing the end of the <a href="#the-input-stream">input stream</a>. If the parser
1.159 mike 1744: is a <a href="embedded-content-0.html#script-created-parser">script-created parser</a>, then the end of the
1.1 mike 1745: <a href="#the-input-stream">input stream</a> is reached when an <dfn id="explicit-eof-character">explicit "EOF"
1.159 mike 1746: character</dfn> (inserted by the <code title="dom-document-close"><a href="embedded-content-0.html#dom-document-close">document.close()</a></code> method) is
1.1 mike 1747: consumed. Otherwise, the "EOF" character is not a real character in
1748: the stream, but rather the lack of any further characters.</p>
1749:
1750:
1.755 mike 1751: <h5 id="changing-the-encoding-while-parsing"><span class="secno">8.2.2.4 </span>Changing the encoding while parsing</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1752:
1753: <p>When the parser requires the user agent to <dfn id="change-the-encoding">change the
1754: encoding</dfn>, it must run the following steps. This might happen
1755: if the <a href="#encoding-sniffing-algorithm">encoding sniffing algorithm</a> described above
1756: failed to find an encoding, or if it found an encoding that was not
1757: the actual encoding of the file.</p>
1758:
1759: <ol><li>If the new encoding is identical or equivalent to the encoding
1760: that is already being used to interpret the input stream, then set
1761: the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1762: <i>certain</i> and abort these steps. This happens when the
1763: encoding information found in the file matches what the
1764: <a href="#encoding-sniffing-algorithm">encoding sniffing algorithm</a> determined to be the
1765: encoding, and in the second pass through the parser if the first
1766: pass found that the encoding sniffing algorithm described in the
1767: earlier section failed to find the right encoding.</li>
1768:
1769: <li>If the encoding that is already being used to interpret the
1770: input stream is a UTF-16 encoding, then set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1771: <i>certain</i> and abort these steps. The new encoding is ignored;
1772: if it was anything but the same encoding, then it would be clearly
1773: incorrect.</li>
1774:
1775: <li>If the new encoding is a UTF-16 encoding, change it to
1776: UTF-8.</li>
1777:
1778: <li>If all the bytes up to the last byte converted by the current
1779: decoder have the same Unicode interpretations in both the current
1780: encoding and the new encoding, and if the user agent supports
1781: changing the converter on the fly, then the user agent may change
1782: to the new converter for the encoding on the fly. Set the
1783: <a href="dom.html#document-s-character-encoding">document's character encoding</a> and the encoding used to
1784: convert the input stream to the new encoding, set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1785: <i>certain</i>, and abort these steps.</li>
1786:
1787: <li>Otherwise, <a href="history.html#navigate">navigate</a> to the document again, with
1788: <a href="history.html#replacement-enabled">replacement enabled</a>, and using the same <a href="history.html#source-browsing-context">source
1789: browsing context</a>, but this time skip the <a href="#encoding-sniffing-algorithm">encoding
1790: sniffing algorithm</a> and instead just set the encoding to the
1791: new encoding and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1792: <i>certain</i>. Whenever possible, this should be done without
1793: actually contacting the network layer (the bytes should be
1794: re-parsed from memory), even if, e.g., the document is marked as
1795: not being cacheable. If this is not possible and contacting the
1796: network layer would involve repeating a request that uses a method
1797: other than HTTP GET (<a href="infrastructure.html#concept-http-equivalent-get" title="concept-http-equivalent-get">or
1798: equivalent</a> for non-HTTP URLs), then instead set the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> to
1799: <i>certain</i> and ignore the new encoding. The resource will be
1800: misinterpreted. User agents may notify the user of the situation,
1801: to aid in application development.</li>
1802:
1.266 mike 1803: </ol></div><div class="impl">
1804:
1.755 mike 1805: <h4 id="parse-state"><span class="secno">8.2.3 </span>Parse state</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1806:
1.755 mike 1807: <h5 id="the-insertion-mode"><span class="secno">8.2.3.1 </span>The insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1808:
1809: <p>The <dfn id="insertion-mode">insertion mode</dfn> is a state variable that controls
1810: the primary operation of the tree construction stage.</p>
1811:
1812: <p>Initially, the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-initial-insertion-mode" title="insertion mode: initial">initial</a>". It can change to
1813: "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before html</a>",
1814: "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before head</a>",
1815: "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>", "<a href="#parsing-main-inheadnoscript" title="insertion mode: in head noscript">in head noscript</a>",
1.540 mike 1816: "<a href="#the-after-head-insertion-mode" title="insertion mode: after head">after head</a>", "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>", "<a href="#parsing-main-incdata" title="insertion mode: text">text</a>",
1.1 mike 1817: "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>", "<a href="#parsing-main-intabletext" title="insertion mode: in table text">in table text</a>", "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>", "<a href="#parsing-main-incolgroup" title="insertion mode: in column group">in column group</a>",
1818: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table body</a>",
1819: "<a href="#parsing-main-intr" title="insertion mode: in row">in row</a>", "<a href="#parsing-main-intd" title="insertion mode: in cell">in cell</a>", "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>", "<a href="#parsing-main-inselectintable" title="insertion mode: in select in table">in select in
1820: table</a>", "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in
1821: foreign content</a>", "<a href="#parsing-main-afterbody" title="insertion mode: after
1822: body">after body</a>", "<a href="#parsing-main-inframeset" title="insertion mode: in
1823: frameset">in frameset</a>", "<a href="#parsing-main-afterframeset" title="insertion mode: after
1824: frameset">after frameset</a>", "<a href="#the-after-after-body-insertion-mode" title="insertion mode:
1825: after after body">after after body</a>", and "<a href="#the-after-after-frameset-insertion-mode" title="insertion mode: after after frameset">after after
1826: frameset</a>" during the course of the parsing, as described in
1827: the <a href="#tree-construction">tree construction</a> stage. The insertion mode affects
1828: how tokens are processed and whether CDATA sections are
1829: supported.</p>
1830:
1831: <p>Seven of these modes, namely "<a href="#parsing-main-inhead" title="insertion mode: in
1832: head">in head</a>", "<a href="#parsing-main-inbody" title="insertion mode: in body">in
1833: body</a>", "<a href="#parsing-main-intable" title="insertion mode: in table">in
1834: table</a>", "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
1835: body</a>", "<a href="#parsing-main-intr" title="insertion mode: in row">in row</a>",
1836: "<a href="#parsing-main-intd" title="insertion mode: in cell">in cell</a>", and "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>", are special, in
1837: that the other modes defer to them at various times. When the
1838: algorithm below says that the user agent is to do something
1839: "<dfn id="using-the-rules-for">using the rules for</dfn> the <var title="">m</var> insertion
1840: mode", where <var title="">m</var> is one of these modes, the user
1841: agent must use the rules described under the <var title="">m</var>
1842: <a href="#insertion-mode">insertion mode</a>'s section, but must leave the
1843: <a href="#insertion-mode">insertion mode</a> unchanged unless the rules in <var title="">m</var> themselves switch the <a href="#insertion-mode">insertion mode</a>
1844: to a new value.</p>
1845:
1846: <p>When the insertion mode is switched to "<a href="#parsing-main-incdata" title="insertion
1.540 mike 1847: mode: text">text</a>" or "<a href="#parsing-main-intabletext" title="insertion mode: in table
1848: text">in table text</a>", the <dfn id="original-insertion-mode">original insertion mode</dfn>
1849: is also set. This is the insertion mode to which the tree
1850: construction stage will return.</p>
1.1 mike 1851:
1852: <p>When the insertion mode is switched to "<a href="#parsing-main-inforeign" title="insertion
1853: mode: in foreign content">in foreign content</a>", the
1854: <dfn id="secondary-insertion-mode">secondary insertion mode</dfn> is also set. This secondary mode
1855: is used within the rules for the "<a href="#parsing-main-inforeign" title="insertion mode: in
1856: foreign content">in foreign content</a>" mode to handle HTML
1857: (i.e. not foreign) content.</p>
1858:
1859: <hr><p>When the steps below require the UA to <dfn id="reset-the-insertion-mode-appropriately">reset the insertion
1860: mode appropriately</dfn>, it means the UA must follow these
1861: steps:</p>
1862:
1863: <ol><li>Let <var title="">last</var> be false.</li>
1864:
1.604 mike 1865: <li>Let <var title="">foreign</var> be false.</li>
1866:
1.1 mike 1867: <li>Let <var title="">node</var> be the last node in the
1868: <a href="#stack-of-open-elements">stack of open elements</a>.</li>
1869:
1.604 mike 1870: <li><i>Loop</i>: If <var title="">node</var> is the first node in
1871: the stack of open elements, then set <var title="">last</var> to
1872: true and set <var title="">node</var> to the <var title="">context</var> element. (<a href="#fragment-case">fragment case</a>)</li>
1.1 mike 1873:
1874: <li>If <var title="">node</var> is a <code><a href="forms.html#the-select-element">select</a></code> element,
1.604 mike 1875: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>" and jump to the
1.856 mike 1876: step labeled <i title="">end</i>. (<a href="#fragment-case">fragment case</a>)</li>
1.1 mike 1877:
1878: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-td-element">td</a></code> or
1879: <code><a href="tabular-data.html#the-th-element">th</a></code> element and <var title="">last</var> is false, then
1880: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intd" title="insertion
1.856 mike 1881: mode: in cell">in cell</a>" and jump to the step labeled <i title="">end</i>.</li>
1.1 mike 1882:
1883: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then
1884: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion
1.856 mike 1885: mode: in row">in row</a>" and jump to the step labeled <i title="">end</i>.</li>
1.1 mike 1886:
1887: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>,
1888: <code><a href="tabular-data.html#the-thead-element">thead</a></code>, or <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element, then switch the
1889: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intbody" title="insertion mode: in
1.856 mike 1890: table body">in table body</a>" and jump to the step labeled <i title="">end</i>.</li>
1.1 mike 1891:
1892: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-caption-element">caption</a></code> element,
1.604 mike 1893: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>" and jump to
1.856 mike 1894: the step labeled <i title="">end</i>.</li>
1.1 mike 1895:
1896: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element,
1897: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incolgroup" title="insertion mode: in column group">in column group</a>" and
1.856 mike 1898: jump to the step labeled <i title="">end</i>. (<a href="#fragment-case">fragment
1.604 mike 1899: case</a>)</li>
1.1 mike 1900:
1901: <li>If <var title="">node</var> is a <code><a href="tabular-data.html#the-table-element">table</a></code> element,
1.604 mike 1902: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>" and jump to the
1.856 mike 1903: step labeled <i title="">end</i>.</li>
1.1 mike 1904:
1.159 mike 1905: <li>If <var title="">node</var> is a <code><a href="semantics.html#the-head-element-0">head</a></code> element,
1.604 mike 1906: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" ("<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>"! <em> not "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>"</em>!) and jump to
1.856 mike 1907: the step labeled <i title="">end</i>. (<a href="#fragment-case">fragment
1.604 mike 1908: case</a>)</li> <!-- This is only here for now in case people
1909: think that the spec accidentally omitted it and try to "fix"
1910: it. Note that noscript-in-head is also handled this way. This is
1911: all intentional. The only thing it doesn't handle is the
1912: scripting-disabled fragment parsing case for a <head> element
1913: containing a <noscript> which itself contains something other than
1.872 mike 1914: a <link> or a <style type="text/css"> element; you'd expect that to break out of
1.604 mike 1915: the <noscript> but it doesn't. This is an edge case that doesn't
1916: affect the spec, since the algorithm for fragment parsing is only
1917: used for innerHTML/outerHTML/insertAdjacentHTML(), where we know
1918: scripting is enabled. -->
1.1 mike 1919:
1.159 mike 1920: <li>If <var title="">node</var> is a <code><a href="semantics.html#the-body-element-0">body</a></code> element,
1.604 mike 1921: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" and jump to the
1.856 mike 1922: step labeled <i title="">end</i>.</li>
1.1 mike 1923:
1.5 mike 1924: <li>If <var title="">node</var> is a <code><a href="obsolete.html#frameset">frameset</a></code> element,
1.604 mike 1925: then switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inframeset" title="insertion mode: in frameset">in frameset</a>" and jump to
1.856 mike 1926: the step labeled <i title="">end</i>. (<a href="#fragment-case">fragment
1.604 mike 1927: case</a>)</li>
1.1 mike 1928:
1.159 mike 1929: <li>If <var title="">node</var> is an <code><a href="semantics.html#the-html-element-0">html</a></code> element,
1.333 mike 1930: then <!--: if the <span><code title="">head</code> element
1931: pointer</span> is null,--> switch the <a href="#insertion-mode">insertion mode</a>
1932: to "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before
1933: head</a>"<!--, otherwise, switch the <span>insertion mode</span>
1934: to "<span title="insertion mode: after head">after head</span>".-->
1.856 mike 1935: Then, <!-- in either case, --> jump to the step labeled <i title="">end</i>. (<a href="#fragment-case">fragment case</a>)</li> <!-- if the
1.604 mike 1936: head element pointer can ever be non-null when we're going through
1937: these steps, we'll need to uncomment out the commented-out bits -->
1938:
1.724 mike 1939: <li>If <var title="">node</var> is an element from the <a href="infrastructure.html#mathml-namespace">MathML
1940: namespace</a> or the <a href="infrastructure.html#svg-namespace">SVG namespace</a>, then set the
1.604 mike 1941: <var title="">foreign</var> flag to true.</li>
1.1 mike 1942:
1943: <li>If <var title="">last</var> is true, then switch the
1944: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in
1.856 mike 1945: body">in body</a>" and jump to the step labeled <i title="">end</i>. (<a href="#fragment-case">fragment case</a>)</li>
1.1 mike 1946:
1947: <li>Let <var title="">node</var> now be the node before <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
1948: elements</a>.</li>
1949:
1.856 mike 1950: <li>Return to the step labeled <i>loop</i>.</li>
1.604 mike 1951:
1952: <li><i>End</i>: If <var title="">foreign</var> is true, switch the
1953: <a href="#secondary-insertion-mode">secondary insertion mode</a> to whatever the
1954: <a href="#insertion-mode">insertion mode</a> is set to, and switch the
1955: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
1956: foreign content">in foreign content</a>".</li>
1.1 mike 1957:
1.755 mike 1958: </ol><h5 id="the-stack-of-open-elements"><span class="secno">8.2.3.2 </span>The stack of open elements</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 1959:
1960: <p>Initially, the <dfn id="stack-of-open-elements">stack of open elements</dfn> is empty. The
1961: stack grows downwards; the topmost node on the stack is the first
1962: one added to the stack, and the bottommost node of the stack is the
1963: most recently added node in the stack (notwithstanding when the
1964: stack is manipulated in a random access fashion as part of <a href="#adoptionAgency">the handling for misnested tags</a>).</p>
1965:
1966: <p>The "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before
1967: html</a>" <a href="#insertion-mode">insertion mode</a> creates the
1.159 mike 1968: <code><a href="semantics.html#the-html-element-0">html</a></code> root element node, which is then added to the
1.1 mike 1969: stack.</p>
1970:
1971: <p>In the <a href="#fragment-case">fragment case</a>, the <a href="#stack-of-open-elements">stack of open
1.159 mike 1972: elements</a> is initialized to contain an <code><a href="semantics.html#the-html-element-0">html</a></code>
1.1 mike 1973: element that is created as part of <a href="#html-fragment-parsing-algorithm" title="html fragment
1974: parsing algorithm">that algorithm</a>. (The <a href="#fragment-case">fragment
1975: case</a> skips the "<a href="#the-before-html-insertion-mode" title="insertion mode: before
1976: html">before html</a>" <a href="#insertion-mode">insertion mode</a>.)</p>
1977:
1.159 mike 1978: <p>The <code><a href="semantics.html#the-html-element-0">html</a></code> node, however it is created, is the topmost
1.838 mike 1979: node of the stack. It only gets popped off the stack when the parser
1980: <a href="#stop-parsing" title="stop parsing">finishes</a>.</p>
1.1 mike 1981:
1982: <p>The <dfn id="current-node">current node</dfn> is the bottommost node in this
1983: stack.</p>
1984:
1985: <p>The <dfn id="current-table">current table</dfn> is the last <code><a href="tabular-data.html#the-table-element">table</a></code>
1986: element in the <a href="#stack-of-open-elements">stack of open elements</a>, if there is
1987: one. If there is no <code><a href="tabular-data.html#the-table-element">table</a></code> element in the <a href="#stack-of-open-elements">stack of
1988: open elements</a> (<a href="#fragment-case">fragment case</a>), then the
1989: <a href="#current-table">current table</a> is the first element in the <a href="#stack-of-open-elements">stack
1.159 mike 1990: of open elements</a> (the <code><a href="semantics.html#the-html-element-0">html</a></code> element).</p>
1.1 mike 1991:
1992: <p>Elements in the stack fall into the following categories:</p>
1993:
1994: <dl><dt><dfn id="special">Special</dfn></dt>
1995:
1996: <dd><p>The following HTML elements have varying levels of special
1997: parsing rules: <code><a href="semantics.html#the-address-element">address</a></code>, <code><a href="the-canvas-element.html#the-area-element">area</a></code>,
1998: <code><a href="semantics.html#the-article-element">article</a></code>, <code><a href="semantics.html#the-aside-element">aside</a></code>, <code><a href="semantics.html#the-base-element">base</a></code>,
1.724 mike 1999: <code><a href="obsolete.html#basefont">basefont</a></code>, <code><a href="obsolete.html#bgsound">bgsound</a></code>,
1.159 mike 2000: <code><a href="semantics.html#the-blockquote-element">blockquote</a></code>, <code><a href="semantics.html#the-body-element-0">body</a></code>, <code><a href="semantics.html#the-br-element">br</a></code>,
1.5 mike 2001: <code><a href="obsolete.html#center">center</a></code>, <code><a href="tabular-data.html#the-col-element">col</a></code>, <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code>,
1.755 mike 2002: <code><a href="interactive-elements.html#the-command">command</a></code>, <!--v2DDATAGRID <code>datagrid</code>-->,
1.422 mike 2003: <code><a href="semantics.html#the-dd-element">dd</a></code>, <code><a href="interactive-elements.html#the-details-element">details</a></code>, <code><a href="obsolete.html#dir">dir</a></code>,
2004: <code><a href="semantics.html#the-div-element">div</a></code>, <code><a href="semantics.html#the-dl-element">dl</a></code>, <code><a href="semantics.html#the-dt-element">dt</a></code>,
1.762 mike 2005: <code><a href="text-level-semantics.html#the-embed-element">embed</a></code>, <code><a href="forms.html#the-fieldset-element">fieldset</a></code>, <code><a href="semantics.html#the-figure-element">figure</a></code>,
1.422 mike 2006: <code><a href="semantics.html#the-footer-element">footer</a></code>, <code><a href="forms.html#the-form-element">form</a></code>, <code><a href="obsolete.html#frame">frame</a></code>,
2007: <code><a href="obsolete.html#frameset">frameset</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h1</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h2</a></code>,
2008: <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h3</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h4</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h5</a></code>, <code><a href="semantics.html#the-h1-h2-h3-h4-h5-and-h6-elements">h6</a></code>,
2009: <code><a href="semantics.html#the-head-element-0">head</a></code>, <code><a href="semantics.html#the-header-element">header</a></code>, <code><a href="semantics.html#the-hgroup-element">hgroup</a></code>,
2010: <code><a href="semantics.html#the-hr-element">hr</a></code>, <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code>, <!-- <code>image</code>,
2011: (commented out because this isn't an element that can end up on the
2012: stack, so it doesn't matter) --> <code><a href="text-level-semantics.html#the-img-element">img</a></code>,
2013: <code><a href="forms.html#the-input-element">input</a></code>, <code><a href="obsolete.html#isindex-0">isindex</a></code>, <code><a href="semantics.html#the-li-element">li</a></code>,
2014: <code><a href="semantics.html#the-link-element">link</a></code>, <code><a href="obsolete.html#listing">listing</a></code>, <code><a href="interactive-elements.html#menus">menu</a></code>,
2015: <code><a href="semantics.html#meta">meta</a></code>, <code><a href="semantics.html#the-nav-element">nav</a></code>, <code><a href="obsolete.html#noembed">noembed</a></code>,
2016: <code><a href="obsolete.html#noframes">noframes</a></code>, <code><a href="semantics.html#the-noscript-element">noscript</a></code>, <code><a href="semantics.html#the-ol-element">ol</a></code>,
2017: <code><a href="semantics.html#the-p-element">p</a></code>, <code><a href="text-level-semantics.html#the-param-element">param</a></code>, <code><a href="obsolete.html#plaintext">plaintext</a></code>,
2018: <code><a href="semantics.html#the-pre-element">pre</a></code>, <code><a href="semantics.html#script">script</a></code>, <code><a href="semantics.html#the-section-element">section</a></code>,
1.589 mike 2019: <code><a href="forms.html#the-select-element">select</a></code>, <code><a href="semantics.html#the-style-element">style</a></code>, <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>,
2020: <code><a href="forms.html#the-textarea-element">textarea</a></code>, <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>, <code><a href="tabular-data.html#the-thead-element">thead</a></code>,
2021: <code><a href="semantics.html#the-title-element-0">title</a></code>, <code><a href="tabular-data.html#the-tr-element">tr</a></code>, <code><a href="semantics.html#the-ul-element">ul</a></code>,
1.724 mike 2022: <code><a href="obsolete.html#wbr">wbr</a></code>, and <code><a href="obsolete.html#xmp">xmp</a></code>.</p></dd>
1.1 mike 2023:
2024: <dt><dfn id="scoping">Scoping</dfn></dt>
2025: <dd><p>The following HTML elements introduce new <a href="#has-an-element-in-scope" title="has
2026: an element in scope">scopes</a> for various parts of the
1.5 mike 2027: parsing: <code><a href="obsolete.html#the-applet-element">applet</a></code>, <code><a href="forms.html#the-button-element">button</a></code>,
1.159 mike 2028: <code><a href="tabular-data.html#the-caption-element">caption</a></code>, <code><a href="semantics.html#the-html-element-0">html</a></code>, <code><a href="obsolete.html#the-marquee-element">marquee</a></code>,
2029: <code><a href="text-level-semantics.html#the-object-element">object</a></code>, <code><a href="tabular-data.html#the-table-element">table</a></code>, <code><a href="tabular-data.html#the-td-element">td</a></code>,
1.1 mike 2030: <code><a href="tabular-data.html#the-th-element">th</a></code>, and SVG's <code>foreignObject</code>.</p></dd>
2031:
2032: <dt><dfn id="formatting">Formatting</dfn></dt>
2033: <dd><p>The following HTML elements are those that end up in the
2034: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>: <code><a href="text-level-semantics.html#the-a-element">a</a></code>,
1.5 mike 2035: <code><a href="text-level-semantics.html#the-b-element">b</a></code>, <code><a href="obsolete.html#big">big</a></code>, <code><a href="text-level-semantics.html#the-code-element">code</a></code>,
2036: <code><a href="text-level-semantics.html#the-em-element">em</a></code>, <code><a href="obsolete.html#font">font</a></code>, <code><a href="text-level-semantics.html#the-i-element">i</a></code>,
1.724 mike 2037: <code><a href="obsolete.html#nobr">nobr</a></code>, <code><a href="obsolete.html#s">s</a></code>, <code><a href="text-level-semantics.html#the-small-element">small</a></code>,
1.5 mike 2038: <code><a href="obsolete.html#strike">strike</a></code>, <code><a href="text-level-semantics.html#the-strong-element">strong</a></code>, <code><a href="obsolete.html#tt">tt</a></code>, and
2039: <code><a href="obsolete.html#u">u</a></code>.</p></dd>
1.1 mike 2040:
2041: <dt><dfn id="phrasing">Phrasing</dfn></dt>
2042: <dd><p>All other elements found while parsing an HTML
2043: document.</p></dd>
2044:
1.234 mike 2045: </dl><p>The <a href="#stack-of-open-elements">stack of open elements</a> is said to <dfn id="has-an-element-in-the-specific-scope" title="has an element in the specific scope">have an element in a
2046: specific scope</dfn> consisting of a list of element types <var title="">list</var> when the following algorithm terminates in a
2047: match state:</p>
1.1 mike 2048:
2049: <ol><li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
2050: node</a> (the bottommost node of the stack).</p></li>
2051:
2052: <li><p>If <var title="">node</var> is the target node, terminate in
2053: a match state.</p></li>
2054:
1.234 mike 2055: <li><p>Otherwise, if <var title="">node</var> is one of the element
2056: types in <var title="">list</var>, terminate in a failure
2057: state.</p></li>
1.1 mike 2058:
2059: <li><p>Otherwise, set <var title="">node</var> to the previous
2060: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to step
2061: 2. (This will never fail, since the loop will always terminate in
2062: the previous step if the top of the stack — an
1.159 mike 2063: <code><a href="semantics.html#the-html-element-0">html</a></code> element — is reached.)</p></li>
1.1 mike 2064:
1.234 mike 2065: </ol><p>The <a href="#stack-of-open-elements">stack of open elements</a> is said to <dfn id="has-an-element-in-scope" title="has an element in scope">have an element in scope</dfn> when
2066: it <a href="#has-an-element-in-the-specific-scope">has an element in the specific scope</a> consisting
2067: of the following element types:</p>
2068:
2069: <ul class="brief"><li><code><a href="obsolete.html#the-applet-element">applet</a></code> in the HTML namespace</li>
2070: <li><code><a href="tabular-data.html#the-caption-element">caption</a></code> in the HTML namespace</li>
2071: <li><code><a href="semantics.html#the-html-element-0">html</a></code> in the HTML namespace</li> <!-- (This can only happen if the <var title="">node</var> is the topmost node of the <span>stack of open elements</span>, and prevents the next step from being invoked if there are no more elements in the stack.) -->
2072: <li><code><a href="tabular-data.html#the-table-element">table</a></code> in the HTML namespace</li>
2073: <li><code><a href="tabular-data.html#the-td-element">td</a></code> in the HTML namespace</li>
2074: <li><code><a href="tabular-data.html#the-th-element">th</a></code> in the HTML namespace</li>
2075: <li><code><a href="forms.html#the-button-element">button</a></code> in the HTML namespace</li>
2076: <li><code><a href="obsolete.html#the-marquee-element">marquee</a></code> in the HTML namespace</li>
2077: <li><code><a href="text-level-semantics.html#the-object-element">object</a></code> in the HTML namespace</li>
2078: <li><code title="">foreignObject</code> in the SVG namespace</li>
2079: </ul><p>The <a href="#stack-of-open-elements">stack of open elements</a> is said to <dfn id="has-an-element-in-list-item-scope" title="has an element in list item scope">have an element in list
2080: item scope</dfn> when it <a href="#has-an-element-in-the-specific-scope">has an element in the specific
2081: scope</a> consisting of the following element types:</p>
2082:
2083: <ul class="brief"><li>All the element types listed above for the <i><a href="#has-an-element-in-scope">has an element
2084: in scope</a></i> algorithm.</li>
2085: <li><code><a href="semantics.html#the-ol-element">ol</a></code> in the HTML namespace</li>
2086: <li><code><a href="semantics.html#the-ul-element">ul</a></code> in the HTML namespace</li>
2087: </ul><p>The <a href="#stack-of-open-elements">stack of open elements</a> is said to <dfn id="has-an-element-in-table-scope" title="has an element in table scope">have an element in <em>table
2088: scope</em></dfn> when it <a href="#has-an-element-in-the-specific-scope">has an element in the specific
2089: scope</a> consisting of the following element types:</p>
2090:
2091: <ul class="brief"><li><code><a href="semantics.html#the-html-element-0">html</a></code> in the HTML namespace</li> <!-- (This can only happen if the <var title="">node</var> is the topmost node of the <span>stack of open elements</span>, and prevents the next step from being invoked if there are no more elements in the stack.) -->
2092: <li><code><a href="tabular-data.html#the-table-element">table</a></code> in the HTML namespace</li>
2093: </ul><p>Nothing happens if at any time any of the elements in the
1.1 mike 2094: <a href="#stack-of-open-elements">stack of open elements</a> are moved to a new location in,
1.810 mike 2095: or removed from, the <code><a href="infrastructure.html#document">Document</a></code> tree. In particular, the
1.1 mike 2096: stack is not changed in this situation. This can cause, amongst
2097: other strange effects, content to be appended to nodes that are no
2098: longer in the DOM.</p>
2099:
2100: <p class="note">In some cases (namely, when <a href="#adoptionAgency">closing misnested formatting elements</a>),
2101: the stack is manipulated in a random-access fashion.</p>
2102:
2103:
1.755 mike 2104: <h5 id="the-list-of-active-formatting-elements"><span class="secno">8.2.3.3 </span>The list of active formatting elements</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2105:
2106: <p>Initially, the <dfn id="list-of-active-formatting-elements">list of active formatting elements</dfn> is
2107: empty. It is used to handle mis-nested <a href="#formatting" title="formatting">formatting element tags</a>.</p>
2108:
2109: <p>The list contains elements in the <a href="#formatting">formatting</a>
2110: category, and scope markers. The scope markers are inserted when
1.159 mike 2111: entering <code><a href="obsolete.html#the-applet-element">applet</a></code> elements, buttons, <code><a href="text-level-semantics.html#the-object-element">object</a></code>
1.1 mike 2112: elements, marquees, table cells, and table captions, and are used to
1.5 mike 2113: prevent formatting from "leaking" <em>into</em> <code><a href="obsolete.html#the-applet-element">applet</a></code>
1.159 mike 2114: elements, buttons, <code><a href="text-level-semantics.html#the-object-element">object</a></code> elements, marquees, and
1.1 mike 2115: tables.</p>
2116:
2117: <p class="note">The scope markers are unrelated to the concept of an
2118: element being <a href="#has-an-element-in-scope" title="has an element in scope">in
2119: scope</a>.</p>
2120:
2121: <p>In addition, each element in the <a href="#list-of-active-formatting-elements">list of active formatting
2122: elements</a> is associated with the token for which it was
2123: created, so that further elements can be created for that token if
2124: necessary.</p>
2125:
2126: <p>When the steps below require the UA to <dfn id="reconstruct-the-active-formatting-elements">reconstruct the
2127: active formatting elements</dfn>, the UA must perform the following
2128: steps:</p>
2129:
2130: <ol><li>If there are no entries in the <a href="#list-of-active-formatting-elements">list of active formatting
2131: elements</a>, then there is nothing to reconstruct; stop this
2132: algorithm.</li>
2133:
2134: <li>If the last (most recently added) entry in the <a href="#list-of-active-formatting-elements">list of
2135: active formatting elements</a> is a marker, or if it is an
2136: element that is in the <a href="#stack-of-open-elements">stack of open elements</a>, then
2137: there is nothing to reconstruct; stop this algorithm.</li>
2138:
2139: <li>Let <var title="">entry</var> be the last (most recently added)
2140: element in the <a href="#list-of-active-formatting-elements">list of active formatting
2141: elements</a>.</li>
2142:
2143: <li>If there are no entries before <var title="">entry</var> in the
2144: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>, then jump to step
2145: 8.</li>
2146:
2147: <li>Let <var title="">entry</var> be the entry one earlier than
2148: <var title="">entry</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
2149: elements</a>.</li>
2150:
2151: <li>If <var title="">entry</var> is neither a marker nor an element
2152: that is also in the <a href="#stack-of-open-elements">stack of open elements</a>, go to step
2153: 4.</li>
2154:
2155: <li>Let <var title="">entry</var> be the element one later than
2156: <var title="">entry</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
2157: elements</a>.</li>
2158:
2159: <li><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
2160: element <var title="">entry</var> was created, to obtain <var title="">new element</var>.</li>
2161:
2162: <li>Append <var title="">new element</var> to the <a href="#current-node">current
2163: node</a> and push it onto the <a href="#stack-of-open-elements">stack of open
2164: elements</a> so that it is the new <a href="#current-node">current
2165: node</a>.</li>
2166:
2167: <li>Replace the entry for <var title="">entry</var> in the list
2168: with an entry for <var title="">new element</var>.</li>
2169:
2170: <li>If the entry for <var title="">new element</var> in the
2171: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> is not the last
2172: entry in the list, return to step 7.</li>
2173:
2174: </ol><p>This has the effect of reopening all the formatting elements that
2175: were opened in the current body, cell, or caption (whichever is
2176: youngest) that haven't been explicitly closed.</p>
2177:
2178: <p class="note">The way this specification is written, the
2179: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> always consists of
2180: elements in chronological order with the least recently added
2181: element first and the most recently added element last (except for
2182: while steps 8 to 11 of the above algorithm are being executed, of
2183: course).</p>
2184:
2185: <p>When the steps below require the UA to <dfn id="clear-the-list-of-active-formatting-elements-up-to-the-last-marker">clear the list of
2186: active formatting elements up to the last marker</dfn>, the UA must
2187: perform the following steps:</p>
2188:
2189: <ol><li>Let <var title="">entry</var> be the last (most recently added)
2190: entry in the <a href="#list-of-active-formatting-elements">list of active formatting elements</a>.</li>
2191:
2192: <li>Remove <var title="">entry</var> from the <a href="#list-of-active-formatting-elements">list of active
2193: formatting elements</a>.</li>
2194:
2195: <li>If <var title="">entry</var> was a marker, then stop the
2196: algorithm at this point. The list has been cleared up to the last
2197: marker.</li>
2198:
2199: <li>Go to step 1.</li>
2200:
1.755 mike 2201: </ol><h5 id="the-element-pointers"><span class="secno">8.2.3.4 </span>The element pointers</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2202:
2203: <p>Initially, the <dfn id="head-element-pointer"><code title="">head</code> element
2204: pointer</dfn> and the <dfn id="form-element-pointer"><code title="">form</code> element
2205: pointer</dfn> are both null.</p>
2206:
1.159 mike 2207: <p>Once a <code><a href="semantics.html#the-head-element-0">head</a></code> element has been parsed (whether
1.1 mike 2208: implicitly or explicitly) the <a href="#head-element-pointer"><code title="">head</code>
2209: element pointer</a> gets set to point to this node.</p>
2210:
2211: <p>The <a href="#form-element-pointer"><code title="">form</code> element pointer</a>
2212: points to the last <code><a href="forms.html#the-form-element">form</a></code> element that was opened and
2213: whose end tag has not yet been seen. It is used to make form
2214: controls associate with forms in the face of dramatically bad
2215: markup, for historical reasons.</p>
2216:
2217:
1.755 mike 2218: <h5 id="other-parsing-state-flags"><span class="secno">8.2.3.5 </span>Other parsing state flags</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2219:
1.794 mike 2220: <p>The <dfn id="scripting-flag">scripting flag</dfn> is set to "enabled" if <a href="webappapis.html#concept-n-script" title="concept-n-script">scripting was enabled</a> for the
1.810 mike 2221: <code><a href="infrastructure.html#document">Document</a></code> with which the parser is associated when the
1.1 mike 2222: parser was created, and "disabled" otherwise.</p>
2223:
2224: <p class="note">The <a href="#scripting-flag">scripting flag</a> can be enabled even
2225: when the parser was originally created for the <a href="#html-fragment-parsing-algorithm">HTML fragment
2226: parsing algorithm</a>, even though <code><a href="semantics.html#script">script</a></code> elements
2227: don't execute in that case.</p>
2228:
2229: <p>The <dfn id="frameset-ok-flag">frameset-ok flag</dfn> is set to "ok" when the parser is
2230: created. It is set to "not ok" after certain tokens are seen.</p>
2231:
1.266 mike 2232: </div><div class="impl">
1.1 mike 2233:
1.755 mike 2234: <h4 id="tokenization"><span class="secno">8.2.4 </span><dfn>Tokenization</dfn></h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2235:
2236: <p>Implementations must act as if they used the following state
2237: machine to tokenize HTML. The state machine must start in the
2238: <a href="#data-state">data state</a>. Most states consume a single character,
2239: which may have various side-effects, and either switches the state
2240: machine to a new state to <em>reconsume</em> the same character, or
2241: switches it to a new state (to consume the next character), or
2242: repeats the same state (to consume the next character). Some states
2243: have more complicated behavior and can consume several characters
1.541 mike 2244: before switching to another state. In some cases, the tokenizer
2245: state is also changed by the tree construction stage.</p>
1.1 mike 2246:
1.541 mike 2247: <p>The exact behavior of certain states depends on the
2248: <a href="#insertion-mode">insertion mode</a> and the <a href="#stack-of-open-elements">stack of open
2249: elements</a>. Certain states also use a <dfn id="temporary-buffer"><var>temporary
2250: buffer</var></dfn> to track progress.</p>
1.1 mike 2251:
2252: <p>The output of the tokenization step is a series of zero or more
2253: of the following tokens: DOCTYPE, start tag, end tag, comment,
2254: character, end-of-file. DOCTYPE tokens have a name, a public
2255: identifier, a system identifier, and a <i>force-quirks
2256: flag</i>. When a DOCTYPE token is created, its name, public
2257: identifier, and system identifier must be marked as missing (which
2258: is a distinct state from the empty string), and the <i>force-quirks
2259: flag</i> must be set to <i>off</i> (its other state is
2260: <i>on</i>). Start and end tag tokens have a tag name, a
2261: <i>self-closing flag</i>, and a list of attributes, each of which
2262: has a name and a value. When a start or end tag token is created,
2263: its <i>self-closing flag</i> must be unset (its other state is that
2264: it be set), and its attributes list must be empty. Comment and
2265: character tokens have data.</p>
2266:
2267: <p>When a token is emitted, it must immediately be handled by the
2268: <a href="#tree-construction">tree construction</a> stage. The tree construction stage
1.541 mike 2269: can affect the state of the tokenization stage, and can insert
2270: additional characters into the stream. (For example, the
1.1 mike 2271: <code><a href="semantics.html#script">script</a></code> element can result in scripts executing and
1.159 mike 2272: using the <a href="embedded-content-0.html#dynamic-markup-insertion">dynamic markup insertion</a> APIs to insert
1.1 mike 2273: characters into the stream being tokenized.)</p>
2274:
2275: <p>When a start tag token is emitted with its <i>self-closing
2276: flag</i> set, if the flag is not <dfn id="acknowledge-self-closing-flag" title="acknowledge
2277: self-closing flag">acknowledged</dfn> when it is processed by the
2278: tree construction stage, that is a <a href="#parse-error">parse error</a>.</p>
2279:
2280: <p>When an end tag token is emitted with attributes, that is a
2281: <a href="#parse-error">parse error</a>.</p>
2282:
2283: <p>When an end tag token is emitted with its <i>self-closing
2284: flag</i> set, that is a <a href="#parse-error">parse error</a>.</p>
2285:
1.541 mike 2286: <p>An <dfn id="appropriate-end-tag-token">appropriate end tag token</dfn> is an end tag token whose
2287: tag name matches the tag name of the last start tag to have been
2288: emitted from this tokenizer, if any. If no start tag has been
2289: emitted from this tokenizer, then no end tag token is
2290: appropriate.</p>
2291:
1.1 mike 2292: <p>Before each step of the tokenizer, the user agent must first
2293: check the <a href="#parser-pause-flag">parser pause flag</a>. If it is true, then the
2294: tokenizer must abort the processing of any nested invocations of the
1.479 mike 2295: tokenizer, yielding control back to the caller.</p>
1.1 mike 2296:
2297: <p>The tokenizer state machine consists of the states defined in the
2298: following subsections.</p>
2299:
1.541 mike 2300:
1.333 mike 2301: <!-- Order of the lists below is supposed to be non-error then
2302: error, by unicode, then EOF, ending with "anything else" -->
1.1 mike 2303:
1.541 mike 2304:
1.755 mike 2305: <h5 id="data-state"><span class="secno">8.2.4.1 </span><dfn>Data state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2306:
2307: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2308:
2309: <dl class="switch"><dt>U+0026 AMPERSAND (&)</dt>
1.541 mike 2310: <dd>Switch to the <a href="#character-reference-in-data-state">character reference in data
1.56 mike 2311: state</a>.</dd>
1.1 mike 2312:
1.541 mike 2313: <dt>U+003C LESS-THAN SIGN (<)</dt>
2314: <dd>Switch to the <a href="#tag-open-state">tag open state</a>.</dd>
2315:
2316: <dt>EOF</dt>
2317: <dd>Emit an end-of-file token.</dd>
2318:
2319: <dt>Anything else</dt>
2320: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2321: token. Stay in the <a href="#data-state">data state</a>.</dd>
1.1 mike 2322:
1.755 mike 2323: </dl><h5 id="character-reference-in-data-state"><span class="secno">8.2.4.2 </span><dfn>Character reference in data state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.618 mike 2324:
2325: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>, with no
2326: <a href="#additional-allowed-character">additional allowed character</a>.</p>
2327:
2328: <p>If nothing is returned, emit a U+0026 AMPERSAND character
2329: token.</p>
2330:
2331: <p>Otherwise, emit the character token that was returned.</p>
2332:
2333: <p>Finally, switch to the <a href="#data-state">data state</a>.</p>
2334:
2335:
1.755 mike 2336: <h5 id="rcdata-state"><span class="secno">8.2.4.3 </span><dfn>RCDATA state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2337:
1.541 mike 2338: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2339:
1.541 mike 2340: <dl class="switch"><dt>U+0026 AMPERSAND (&)</dt>
1.618 mike 2341: <dd>Switch to the <a href="#character-reference-in-rcdata-state">character reference in RCDATA
1.541 mike 2342: state</a>.</dd>
1.1 mike 2343:
2344: <dt>U+003C LESS-THAN SIGN (<)</dt>
1.541 mike 2345: <dd>Switch to the <a href="#rcdata-less-than-sign-state">RCDATA less-than sign state</a>.</dd>
2346:
2347: <dt>EOF</dt>
2348: <dd>Emit an end-of-file token.</dd>
1.1 mike 2349:
1.541 mike 2350: <dt>Anything else</dt>
2351: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2352: token. Stay in the <a href="#rcdata-state">RCDATA state</a>.</dd>
1.1 mike 2353:
1.755 mike 2354: </dl><h5 id="character-reference-in-rcdata-state"><span class="secno">8.2.4.4 </span><dfn>Character reference in RCDATA state</dfn></h5>
1.618 mike 2355:
2356: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>, with no
2357: <a href="#additional-allowed-character">additional allowed character</a>.</p>
2358:
2359: <p>If nothing is returned, emit a U+0026 AMPERSAND character
2360: token.</p>
2361:
2362: <p>Otherwise, emit the character token that was returned.</p>
2363:
2364: <p>Finally, switch to the <a href="#rcdata-state">RCDATA state</a>.</p>
2365:
2366:
1.755 mike 2367: <h5 id="rawtext-state"><span class="secno">8.2.4.5 </span><dfn>RAWTEXT state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2368:
1.541 mike 2369: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2370:
1.541 mike 2371: <dl class="switch"><dt>U+003C LESS-THAN SIGN (<)</dt>
2372: <dd>Switch to the <a href="#rawtext-less-than-sign-state">RAWTEXT less-than sign state</a>.</dd>
1.1 mike 2373:
2374: <dt>EOF</dt>
2375: <dd>Emit an end-of-file token.</dd>
2376:
2377: <dt>Anything else</dt>
1.541 mike 2378: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2379: token. Stay in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
1.1 mike 2380:
1.755 mike 2381: </dl><h5 id="script-data-state"><span class="secno">8.2.4.6 </span><dfn>Script data state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2382:
1.541 mike 2383: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2384:
1.541 mike 2385: <dl class="switch"><dt>U+003C LESS-THAN SIGN (<)</dt>
2386: <dd>Switch to the <a href="#script-data-less-than-sign-state">script data less-than sign state</a>.</dd>
1.1 mike 2387:
1.541 mike 2388: <dt>EOF</dt>
2389: <dd>Emit an end-of-file token.</dd>
1.1 mike 2390:
1.541 mike 2391: <dt>Anything else</dt>
2392: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2393: token. Stay in the <a href="#script-data-state">script data state</a>.</dd>
1.1 mike 2394:
1.755 mike 2395: </dl><h5 id="plaintext-state"><span class="secno">8.2.4.7 </span><dfn>PLAINTEXT state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2396:
1.541 mike 2397: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2398:
1.541 mike 2399: <dl class="switch"><dt>EOF</dt>
2400: <dd>Emit an end-of-file token.</dd>
1.1 mike 2401:
1.541 mike 2402: <dt>Anything else</dt>
2403: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2404: token. Stay in the <a href="#plaintext-state">PLAINTEXT state</a>.</dd>
1.1 mike 2405:
1.755 mike 2406: </dl><h5 id="tag-open-state"><span class="secno">8.2.4.8 </span><dfn>Tag open state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2407:
1.541 mike 2408: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2409:
1.541 mike 2410: <dl class="switch"><dt>U+0021 EXCLAMATION MARK (!)</dt>
2411: <dd>Switch to the <a href="#markup-declaration-open-state">markup declaration open state</a>.</dd>
1.1 mike 2412:
1.541 mike 2413: <dt>U+002F SOLIDUS (/)</dt>
1.755 mike 2414: <dd>Switch to the <a href="#end-tag-open-state">end tag open state</a>.</dd>
1.1 mike 2415:
1.541 mike 2416: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2417: <dd>Create a new start tag token, set its tag name to the
2418: lowercase version of the <a href="#current-input-character">current input character</a> (add 0x0020 to the
2419: character's code point), then switch to the <a href="#tag-name-state">tag name
2420: state</a>. (Don't emit the token yet; further details will
2421: be filled in before it is emitted.)</dd>
1.1 mike 2422:
1.541 mike 2423: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2424: <dd>Create a new start tag token, set its tag name to the
2425: <a href="#current-input-character">current input character</a>, then switch to the <a href="#tag-name-state">tag
2426: name state</a>. (Don't emit the token yet; further details will
2427: be filled in before it is emitted.)</dd>
1.1 mike 2428:
1.541 mike 2429: <dt>U+003F QUESTION MARK (?)</dt>
2430: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-comment-state">bogus
2431: comment state</a>.</dd>
1.1 mike 2432:
1.541 mike 2433: <dt>Anything else</dt>
2434: <dd><a href="#parse-error">Parse error</a>. Emit a U+003C LESS-THAN SIGN
2435: character token and reconsume the <a href="#current-input-character">current input
2436: character</a> in the <a href="#data-state">data state</a>.</dd>
1.1 mike 2437:
1.755 mike 2438: </dl><h5 id="end-tag-open-state"><span class="secno">8.2.4.9 </span><dfn>End tag open state</dfn></h5>
1.1 mike 2439:
1.541 mike 2440: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
1.1 mike 2441:
2442: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2443: <dd>Create a new end tag token, set its tag name to the lowercase
1.541 mike 2444: version of the <a href="#current-input-character">current input character</a> (add 0x0020 to
2445: the character's code point), then switch to the <a href="#tag-name-state">tag name
1.1 mike 2446: state</a>. (Don't emit the token yet; further details will be
2447: filled in before it is emitted.)</dd>
2448:
2449: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
1.541 mike 2450: <dd>Create a new end tag token, set its tag name to the
2451: <a href="#current-input-character">current input character</a>, then switch to the <a href="#tag-name-state">tag
2452: name state</a>. (Don't emit the token yet; further details will
2453: be filled in before it is emitted.)</dd>
1.1 mike 2454:
2455: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2456: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#data-state">data
2457: state</a>.</dd>
2458:
2459: <dt>EOF</dt>
2460: <dd><a href="#parse-error">Parse error</a>. Emit a U+003C LESS-THAN SIGN
2461: character token and a U+002F SOLIDUS character token. Reconsume
2462: the EOF character in the <a href="#data-state">data state</a>.</dd>
2463:
2464: <dt>Anything else</dt>
2465: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-comment-state">bogus
2466: comment state</a>.</dd>
2467:
1.755 mike 2468: </dl><h5 id="tag-name-state"><span class="secno">8.2.4.10 </span><dfn>Tag name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 2469:
2470: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2471:
2472: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2473: <dt>U+000A LINE FEED (LF)</dt>
2474: <dt>U+000C FORM FEED (FF)</dt>
2475: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2476: <dt>U+0020 SPACE</dt>
2477: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
2478:
2479: <dt>U+002F SOLIDUS (/)</dt>
2480: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
2481:
2482: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2483: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
2484: state</a>.</dd>
2485:
2486: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 2487: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2488: character</a> (add 0x0020 to the character's code point) to the
2489: current tag token's tag name. Stay in the <a href="#tag-name-state">tag name
2490: state</a>.</dd>
2491:
2492: <dt>EOF</dt>
2493: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2494: <a href="#data-state">data state</a>.</dd>
2495:
2496: <dt>Anything else</dt>
2497: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2498: tag token's tag name. Stay in the <a href="#tag-name-state">tag name state</a>.</dd>
2499:
1.755 mike 2500: </dl><h5 id="rcdata-less-than-sign-state"><span class="secno">8.2.4.11 </span><dfn>RCDATA less-than sign state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2501: <!-- identical to the RAWTEXT less-than sign state, except s/RAWTEXT/RCDATA/g -->
2502:
2503: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2504:
2505: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2506: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2507: to the <a href="#rcdata-end-tag-open-state">RCDATA end tag open state</a>.</dd>
2508:
2509: <dt>Anything else</dt>
2510: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2511: <a href="#current-input-character">current input character</a> in the <a href="#rcdata-state">RCDATA
2512: state</a>.</dd>
2513:
1.755 mike 2514: </dl><h5 id="rcdata-end-tag-open-state"><span class="secno">8.2.4.12 </span><dfn>RCDATA end tag open state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2515: <!-- identical to the RAWTEXT (and Script data) end tag open state, except s/RAWTEXT/RCDATA/g -->
2516:
2517: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2518:
2519: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2520: <dd>Create a new end tag token, and set its tag name to the
2521: lowercase version of the <a href="#current-input-character">current input character</a> (add
2522: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2523: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2524: switch to the <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>. (Don't emit
2525: the token yet; further details will be filled in before it is
2526: emitted.)</dd>
2527:
2528: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2529: <dd>Create a new end tag token, and set its tag name to the
2530: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2531: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2532: switch to the <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>. (Don't emit
2533: the token yet; further details will be filled in before it is
2534: emitted.)</dd>
2535:
2536: <dt>Anything else</dt>
2537: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2538: character token, and reconsume the <a href="#current-input-character">current input
2539: character</a> in the <a href="#rcdata-state">RCDATA state</a>.</dd>
2540:
1.755 mike 2541: </dl><h5 id="rcdata-end-tag-name-state"><span class="secno">8.2.4.13 </span><dfn>RCDATA end tag name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2542: <!-- identical to the RAWTEXT (and Script data) end tag name state, except s/RAWTEXT/RCDATA/g -->
2543:
2544: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2545:
2546: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2547: <dt>U+000A LINE FEED (LF)</dt>
2548: <dt>U+000C FORM FEED (FF)</dt>
2549: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2550: <dt>U+0020 SPACE</dt>
2551: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2552: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2553: state</a>. Otherwise, treat it as per the "anything else" entry
2554: below.</dd>
2555:
2556: <dt>U+002F SOLIDUS (/)</dt>
2557: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2558: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2559: state</a>. Otherwise, treat it as per the "anything else" entry
2560: below.</dd>
2561:
2562: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2563: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2564: token</a>, then emit the current tag token and switch to the
2565: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2566: else" entry below.</dd>
2567:
2568: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2569: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2570: character</a> (add 0x0020 to the character's code point) to the
2571: current tag token's tag name. Append the <a href="#current-input-character">current input
2572: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2573: <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>.</dd>
2574:
2575: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2576: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2577: tag token's tag name. Append the <a href="#current-input-character">current input
2578: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2579: <a href="#rcdata-end-tag-name-state">RCDATA end tag name state</a>.</dd>
2580:
2581: <dt>Anything else</dt>
2582: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2583: character token, a character token for each of the characters in
2584: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2585: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2586: in the <a href="#rcdata-state">RCDATA state</a>.</dd>
2587:
1.755 mike 2588: </dl><h5 id="rawtext-less-than-sign-state"><span class="secno">8.2.4.14 </span><dfn>RAWTEXT less-than sign state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2589: <!-- identical to the RCDATA less-than sign state, except s/RCDATA/RAWTEXT/g -->
2590:
2591: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2592:
2593: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2594: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2595: to the <a href="#rawtext-end-tag-open-state">RAWTEXT end tag open state</a>.</dd>
2596:
2597: <dt>Anything else</dt>
2598: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2599: <a href="#current-input-character">current input character</a> in the <a href="#rawtext-state">RAWTEXT
2600: state</a>.</dd>
2601:
1.755 mike 2602: </dl><h5 id="rawtext-end-tag-open-state"><span class="secno">8.2.4.15 </span><dfn>RAWTEXT end tag open state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2603: <!-- identical to the RCDATA (and Script data) end tag open state, except s/RCDATA/RAWTEXT/g -->
2604:
2605: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2606:
2607: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2608: <dd>Create a new end tag token, and set its tag name to the
2609: lowercase version of the <a href="#current-input-character">current input character</a> (add
2610: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2611: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2612: switch to the <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>. (Don't emit
2613: the token yet; further details will be filled in before it is
2614: emitted.)</dd>
2615:
2616: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2617: <dd>Create a new end tag token, and set its tag name to the
2618: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2619: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2620: switch to the <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>. (Don't emit
2621: the token yet; further details will be filled in before it is
2622: emitted.)</dd>
2623:
2624: <dt>Anything else</dt>
2625: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2626: character token, and reconsume the <a href="#current-input-character">current input
2627: character</a> in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
2628:
1.755 mike 2629: </dl><h5 id="rawtext-end-tag-name-state"><span class="secno">8.2.4.16 </span><dfn>RAWTEXT end tag name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2630: <!-- identical to the RCDATA (and Script data) end tag name state, except s/RCDATA/RAWTEXT/g -->
2631:
2632: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2633:
2634: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2635: <dt>U+000A LINE FEED (LF)</dt>
2636: <dt>U+000C FORM FEED (FF)</dt>
2637: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2638: <dt>U+0020 SPACE</dt>
2639: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2640: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2641: state</a>. Otherwise, treat it as per the "anything else" entry
2642: below.</dd>
2643:
2644: <dt>U+002F SOLIDUS (/)</dt>
2645: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2646: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2647: state</a>. Otherwise, treat it as per the "anything else" entry
2648: below.</dd>
2649:
2650: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2651: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2652: token</a>, then emit the current tag token and switch to the
2653: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2654: else" entry below.</dd>
2655:
2656: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2657: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2658: character</a> (add 0x0020 to the character's code point) to the
2659: current tag token's tag name. Append the <a href="#current-input-character">current input
2660: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2661: <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>.</dd>
2662:
2663: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2664: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2665: tag token's tag name. Append the <a href="#current-input-character">current input
2666: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2667: <a href="#rawtext-end-tag-name-state">RAWTEXT end tag name state</a>.</dd>
2668:
2669: <dt>Anything else</dt>
2670: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2671: character token, a character token for each of the characters in
2672: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2673: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2674: in the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
2675:
1.755 mike 2676: </dl><h5 id="script-data-less-than-sign-state"><span class="secno">8.2.4.17 </span><dfn>Script data less-than sign state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2677:
2678: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2679:
2680: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2681: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2682: to the <a href="#script-data-end-tag-open-state">script data end tag open state</a>.</dd>
2683:
2684: <dt>U+0021 EXCLAMATION MARK (!)</dt>
2685: <dd>Emit a U+003C LESS-THAN SIGN character token and a U+0021
2686: EXCLAMATION MARK character token. Switch to the <a href="#script-data-escape-start-state">script data
2687: escape start state</a>.</dd>
2688:
2689: <dt>Anything else</dt>
2690: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2691: <a href="#current-input-character">current input character</a> in the <a href="#script-data-state">script data
2692: state</a>.</dd>
2693:
1.755 mike 2694: </dl><h5 id="script-data-end-tag-open-state"><span class="secno">8.2.4.18 </span><dfn>Script data end tag open state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2695: <!-- identical to the RCDATA (and RAWTEXT) end tag open state, except s/RCDATA/Script data/g -->
2696:
2697: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2698:
2699: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2700: <dd>Create a new end tag token, and set its tag name to the
2701: lowercase version of the <a href="#current-input-character">current input character</a> (add
2702: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2703: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2704: switch to the <a href="#script-data-end-tag-name-state">script data end tag name state</a>. (Don't emit
2705: the token yet; further details will be filled in before it is
2706: emitted.)</dd>
2707:
2708: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2709: <dd>Create a new end tag token, and set its tag name to the
2710: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2711: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2712: switch to the <a href="#script-data-end-tag-name-state">script data end tag name state</a>. (Don't emit
2713: the token yet; further details will be filled in before it is
2714: emitted.)</dd>
2715:
2716: <dt>Anything else</dt>
2717: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2718: character token, and reconsume the <a href="#current-input-character">current input
2719: character</a> in the <a href="#script-data-state">script data state</a>.</dd>
2720:
1.755 mike 2721: </dl><h5 id="script-data-end-tag-name-state"><span class="secno">8.2.4.19 </span><dfn>Script data end tag name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2722: <!-- identical to the RCDATA (and RAWTEXT) end tag name state, except s/RCDATA/Script data/g -->
2723:
2724: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2725:
2726: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2727: <dt>U+000A LINE FEED (LF)</dt>
2728: <dt>U+000C FORM FEED (FF)</dt>
2729: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2730: <dt>U+0020 SPACE</dt>
2731: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2732: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2733: state</a>. Otherwise, treat it as per the "anything else" entry
2734: below.</dd>
2735:
2736: <dt>U+002F SOLIDUS (/)</dt>
2737: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2738: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2739: state</a>. Otherwise, treat it as per the "anything else" entry
2740: below.</dd>
2741:
2742: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2743: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2744: token</a>, then emit the current tag token and switch to the
2745: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2746: else" entry below.</dd>
2747:
2748: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2749: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2750: character</a> (add 0x0020 to the character's code point) to the
2751: current tag token's tag name. Append the <a href="#current-input-character">current input
2752: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
1.542 mike 2753: <a href="#script-data-end-tag-name-state">script data end tag name state</a>.</dd>
1.541 mike 2754:
2755: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2756: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2757: tag token's tag name. Append the <a href="#current-input-character">current input
2758: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
1.542 mike 2759: <a href="#script-data-end-tag-name-state">script data end tag name state</a>.</dd>
1.541 mike 2760:
2761: <dt>Anything else</dt>
2762: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2763: character token, a character token for each of the characters in
2764: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2765: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2766: in the <a href="#script-data-state">script data state</a>.</dd>
2767:
1.755 mike 2768: </dl><h5 id="script-data-escape-start-state"><span class="secno">8.2.4.20 </span><dfn>Script data escape start state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2769:
2770: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2771:
2772: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2773: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2774: <a href="#script-data-escape-start-dash-state">script data escape start dash state</a>.</dd>
2775:
2776: <dt>Anything else</dt>
2777: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2778: <a href="#script-data-state">script data state</a>.</dd>
2779:
1.755 mike 2780: </dl><h5 id="script-data-escape-start-dash-state"><span class="secno">8.2.4.21 </span><dfn>Script data escape start dash state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2781:
2782: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2783:
2784: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2785: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2786: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2787:
2788: <dt>Anything else</dt>
2789: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2790: <a href="#script-data-state">script data state</a>.</dd>
2791:
1.755 mike 2792: </dl><h5 id="script-data-escaped-state"><span class="secno">8.2.4.22 </span><dfn>Script data escaped state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2793:
2794: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2795:
2796: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2797: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2798: <a href="#script-data-escaped-dash-state">script data escaped dash state</a>.</dd>
2799:
1.542 mike 2800: <dt>U+003C LESS-THAN SIGN (<)</dt>
2801: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2802: state</a>.</p></dd>
2803:
1.541 mike 2804: <dt>EOF</dt>
2805: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2806: <a href="#data-state">data state</a>.</dd>
2807:
2808: <dt>Anything else</dt>
1.542 mike 2809: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2810: token. Stay in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
1.541 mike 2811:
1.755 mike 2812: </dl><h5 id="script-data-escaped-dash-state"><span class="secno">8.2.4.23 </span><dfn>Script data escaped dash state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2813:
2814: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2815:
2816: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2817: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2818: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2819:
1.542 mike 2820: <dt>U+003C LESS-THAN SIGN (<)</dt>
2821: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2822: state</a>.</p></dd>
2823:
1.541 mike 2824: <dt>EOF</dt>
2825: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2826: <a href="#data-state">data state</a>.</dd>
2827:
2828: <dt>Anything else</dt>
1.542 mike 2829: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2830: token. Switch to the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
1.541 mike 2831:
1.755 mike 2832: </dl><h5 id="script-data-escaped-dash-dash-state"><span class="secno">8.2.4.24 </span><dfn>Script data escaped dash dash state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.541 mike 2833:
2834: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2835:
2836: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2837: <dd>Emit a U+002D HYPHEN-MINUS character token. Stay in the
2838: <a href="#script-data-escaped-dash-dash-state">script data escaped dash dash state</a>.</dd>
2839:
1.542 mike 2840: <dt>U+003C LESS-THAN SIGN (<)</dt>
2841: <dd><p>Switch to the <a href="#script-data-escaped-less-than-sign-state">script data escaped less-than sign
2842: state</a>.</p></dd>
2843:
1.541 mike 2844: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2845: <dd>Emit a U+003E GREATER-THAN SIGN character token. Switch to the
2846: <a href="#script-data-state">script data state</a>.</dd>
1.1 mike 2847:
2848: <dt>EOF</dt>
2849: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
2850: <a href="#data-state">data state</a>.</dd>
2851:
2852: <dt>Anything else</dt>
1.542 mike 2853: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2854: token. Switch to the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2855:
1.755 mike 2856: </dl><h5 id="script-data-escaped-less-than-sign-state"><span class="secno">8.2.4.25 </span><dfn>Script data escaped less-than sign state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 2857:
2858: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2859:
2860: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
2861: <dd>Set the <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Switch
2862: to the <a href="#script-data-escaped-end-tag-open-state">script data escaped end tag open state</a>.</dd>
2863:
2864: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2865: <dd>Emit a U+003C LESS-THAN SIGN character token and the
2866: <a href="#current-input-character">current input character</a> as a character token. Set the
2867: <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Append the
2868: lowercase version of the <a href="#current-input-character">current input character</a> (add
2869: 0x0020 to the character's code point) to the <var><a href="#temporary-buffer">temporary
2870: buffer</a></var>. Switch to the <a href="#script-data-double-escape-start-state">script data double escape start
2871: state</a>.</dd>
2872:
2873: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2874: <dd>Emit a U+003C LESS-THAN SIGN character token and the
2875: <a href="#current-input-character">current input character</a> as a character token. Set the
2876: <var><a href="#temporary-buffer">temporary buffer</a></var> to the empty string. Append the
2877: <a href="#current-input-character">current input character</a> to the <var><a href="#temporary-buffer">temporary
2878: buffer</a></var>. Switch to the <a href="#script-data-double-escape-start-state">script data double escape start
2879: state</a>.</dd>
2880:
2881: <dt>Anything else</dt>
2882: <dd>Emit a U+003C LESS-THAN SIGN character token and reconsume the
2883: <a href="#current-input-character">current input character</a> in the <a href="#script-data-escaped-state">script data
2884: escaped state</a>.</dd>
2885:
1.755 mike 2886: </dl><h5 id="script-data-escaped-end-tag-open-state"><span class="secno">8.2.4.26 </span><dfn>Script data escaped end tag open state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 2887:
2888: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2889:
2890: <dl class="switch"><dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2891: <dd>Create a new end tag token, and set its tag name to the
2892: lowercase version of the <a href="#current-input-character">current input character</a> (add
2893: 0x0020 to the character's code point). Append the <a href="#current-input-character">current
2894: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2895: switch to the <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name
2896: state</a>. (Don't emit the token yet; further details will be
2897: filled in before it is emitted.)</dd>
2898:
2899: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2900: <dd>Create a new end tag token, and set its tag name to the
2901: <a href="#current-input-character">current input character</a>. Append the <a href="#current-input-character">current
2902: input character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Finally,
2903: switch to the <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name
2904: state</a>. (Don't emit the token yet; further details will be
2905: filled in before it is emitted.)</dd>
2906:
2907: <dt>Anything else</dt>
2908: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2909: character token, and reconsume the <a href="#current-input-character">current input
2910: character</a> in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2911:
1.755 mike 2912: </dl><h5 id="script-data-escaped-end-tag-name-state"><span class="secno">8.2.4.27 </span><dfn>Script data escaped end tag name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 2913:
2914: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2915:
2916: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2917: <dt>U+000A LINE FEED (LF)</dt>
2918: <dt>U+000C FORM FEED (FF)</dt>
2919: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2920: <dt>U+0020 SPACE</dt>
2921: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2922: token</a>, then switch to the <a href="#before-attribute-name-state">before attribute name
2923: state</a>. Otherwise, treat it as per the "anything else" entry
2924: below.</dd>
2925:
2926: <dt>U+002F SOLIDUS (/)</dt>
2927: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2928: token</a>, then switch to the <a href="#self-closing-start-tag-state">self-closing start tag
2929: state</a>. Otherwise, treat it as per the "anything else" entry
2930: below.</dd>
2931:
2932: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2933: <dd>If the current end tag token is an <a href="#appropriate-end-tag-token">appropriate end tag
2934: token</a>, then emit the current tag token and switch to the
2935: <a href="#data-state">data state</a>. Otherwise, treat it as per the "anything
2936: else" entry below.</dd>
2937:
2938: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2939: <dd>Append the lowercase version of the <a href="#current-input-character">current input
2940: character</a> (add 0x0020 to the character's code point) to the
2941: current tag token's tag name. Append the <a href="#current-input-character">current input
2942: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2943: <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name state</a>.</dd>
2944:
2945: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2946: <dd>Append the <a href="#current-input-character">current input character</a> to the current
2947: tag token's tag name. Append the <a href="#current-input-character">current input
2948: character</a> to the <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the
2949: <a href="#script-data-escaped-end-tag-name-state">script data escaped end tag name state</a>.</dd>
2950:
2951: <dt>Anything else</dt>
2952: <dd>Emit a U+003C LESS-THAN SIGN character token, a U+002F SOLIDUS
2953: character token, a character token for each of the characters in
2954: the <var><a href="#temporary-buffer">temporary buffer</a></var> (in the order they were added to
2955: the buffer), and reconsume the <a href="#current-input-character">current input character</a>
2956: in the <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2957:
1.755 mike 2958: </dl><h5 id="script-data-double-escape-start-state"><span class="secno">8.2.4.28 </span><dfn>Script data double escape start state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 2959:
2960: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2961:
2962: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
2963: <dt>U+000A LINE FEED (LF)</dt>
2964: <dt>U+000C FORM FEED (FF)</dt>
2965: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
2966: <dt>U+0020 SPACE</dt>
2967: <dt>U+002F SOLIDUS (/)</dt>
2968: <dt>U+003E GREATER-THAN SIGN (>)</dt>
2969: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2970: token. If the <var><a href="#temporary-buffer">temporary buffer</a></var> is the string "<code title="">script</code>", then switch to the <a href="#script-data-double-escaped-state">script data
2971: double escaped state</a>. Otherwise, switch to the <a href="#script-data-escaped-state">script
2972: data escaped state</a>.</dd>
2973:
2974: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
2975: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2976: token. Append the lowercase version of the <a href="#current-input-character">current input
2977: character</a> (add 0x0020 to the character's code point) to the
2978: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-start-state">script data double
2979: escape start state</a>.</dd>
2980:
2981: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
2982: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
2983: token. Append the <a href="#current-input-character">current input character</a> to the
2984: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-start-state">script data double
2985: escape start state</a>.</dd>
2986:
2987: <dt>Anything else</dt>
2988: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
2989: <a href="#script-data-escaped-state">script data escaped state</a>.</dd>
2990:
1.755 mike 2991: </dl><h5 id="script-data-double-escaped-state"><span class="secno">8.2.4.29 </span><dfn>Script data double escaped state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 2992:
2993: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
2994:
2995: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
2996: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
2997: <a href="#script-data-double-escaped-dash-state">script data double escaped dash state</a>.</dd>
2998:
2999: <dt>U+003C LESS-THAN SIGN (<)</dt>
3000: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
3001: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
3002: state</a>.</p></dd>
3003:
3004: <dt>EOF</dt>
3005: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3006: <a href="#data-state">data state</a>.</dd>
3007:
3008: <dt>Anything else</dt>
3009: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3010: token. Stay in the <a href="#script-data-double-escaped-state">script data double escaped
3011: state</a>.</dd>
3012:
1.755 mike 3013: </dl><h5 id="script-data-double-escaped-dash-state"><span class="secno">8.2.4.30 </span><dfn>Script data double escaped dash state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 3014:
3015: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3016:
3017: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3018: <dd>Emit a U+002D HYPHEN-MINUS character token. Switch to the
3019: <a href="#script-data-double-escaped-dash-dash-state">script data double escaped dash dash state</a>.</dd>
3020:
3021: <dt>U+003C LESS-THAN SIGN (<)</dt>
3022: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
3023: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
3024: state</a>.</p></dd>
3025:
3026: <dt>EOF</dt>
3027: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3028: <a href="#data-state">data state</a>.</dd>
3029:
3030: <dt>Anything else</dt>
3031: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3032: token. Switch to the <a href="#script-data-double-escaped-state">script data double escaped
3033: state</a>.</dd>
3034:
1.755 mike 3035: </dl><h5 id="script-data-double-escaped-dash-dash-state"><span class="secno">8.2.4.31 </span><dfn>Script data double escaped dash dash state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 3036:
3037: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3038:
3039: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3040: <dd>Emit a U+002D HYPHEN-MINUS character token. Stay in the
3041: <a href="#script-data-double-escaped-dash-dash-state">script data double escaped dash dash state</a>.</dd>
3042:
3043: <dt>U+003C LESS-THAN SIGN (<)</dt>
3044: <dd><p>Emit a U+003C LESS-THAN SIGN character token. Switch to the
3045: <a href="#script-data-double-escaped-less-than-sign-state">script data double escaped less-than sign
3046: state</a>.</p></dd>
3047:
3048: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3049: <dd>Emit a U+003E GREATER-THAN SIGN character token. Switch to the
3050: <a href="#script-data-state">script data state</a>.</dd>
3051:
3052: <dt>EOF</dt>
3053: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3054: <a href="#data-state">data state</a>.</dd>
3055:
3056: <dt>Anything else</dt>
3057: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3058: token. Switch to the <a href="#script-data-double-escaped-state">script data double escaped
3059: state</a>.</dd>
3060:
1.755 mike 3061: </dl><h5 id="script-data-double-escaped-less-than-sign-state"><span class="secno">8.2.4.32 </span><dfn>Script data double escaped less-than sign state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 3062:
3063: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3064:
3065: <dl class="switch"><dt>U+002F SOLIDUS (/)</dt>
3066: <dd>Emit a U+002F SOLIDUS character token. Set the <var><a href="#temporary-buffer">temporary
3067: buffer</a></var> to the empty string. Switch to the <a href="#script-data-double-escape-end-state">script data
3068: double escape end state</a>.</dd>
3069:
3070: <dt>Anything else</dt>
3071: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
3072: <a href="#script-data-double-escaped-state">script data double escaped state</a>.</dd>
3073:
1.755 mike 3074: </dl><h5 id="script-data-double-escape-end-state"><span class="secno">8.2.4.33 </span><dfn>Script data double escape end state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.542 mike 3075:
3076: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3077:
3078: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3079: <dt>U+000A LINE FEED (LF)</dt>
3080: <dt>U+000C FORM FEED (FF)</dt>
3081: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3082: <dt>U+0020 SPACE</dt>
3083: <dt>U+002F SOLIDUS (/)</dt>
3084: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3085: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3086: token. If the <var><a href="#temporary-buffer">temporary buffer</a></var> is the string "<code title="">script</code>", then switch to the <a href="#script-data-escaped-state">script data
3087: escaped state</a>. Otherwise, switch to the <a href="#script-data-double-escaped-state">script data
3088: double escaped state</a>.</dd>
3089:
3090: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3091: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3092: token. Append the lowercase version of the <a href="#current-input-character">current input
3093: character</a> (add 0x0020 to the character's code point) to the
3094: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-end-state">script data double
3095: escape end state</a>.</dd>
3096:
3097: <dt>U+0061 LATIN SMALL LETTER A through to U+007A LATIN SMALL LETTER Z</dt>
3098: <dd>Emit the <a href="#current-input-character">current input character</a> as a character
3099: token. Append the <a href="#current-input-character">current input character</a> to the
3100: <var><a href="#temporary-buffer">temporary buffer</a></var>. Stay in the <a href="#script-data-double-escape-end-state">script data double
3101: escape end state</a>.</dd>
3102:
3103: <dt>Anything else</dt>
3104: <dd>Reconsume the <a href="#current-input-character">current input character</a> in the
3105: <a href="#script-data-double-escaped-state">script data double escaped state</a>.</dd>
1.1 mike 3106:
1.755 mike 3107: </dl><h5 id="before-attribute-name-state"><span class="secno">8.2.4.34 </span><dfn>Before attribute name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3108:
3109: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3110:
3111: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3112: <dt>U+000A LINE FEED (LF)</dt>
3113: <dt>U+000C FORM FEED (FF)</dt>
3114: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3115: <dt>U+0020 SPACE</dt>
3116: <dd>Stay in the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3117:
3118: <dt>U+002F SOLIDUS (/)</dt>
3119: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3120:
3121: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3122: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3123: state</a>.</dd>
3124:
3125: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3126: <dd>Start a new attribute in the current tag token. Set that
3127: attribute's name to the lowercase version of the <a href="#current-input-character">current input
3128: character</a> (add 0x0020 to the character's code point), and its
3129: value to the empty string. Switch to the <a href="#attribute-name-state">attribute name
3130: state</a>.</dd>
3131:
3132: <dt>U+0022 QUOTATION MARK (")</dt>
3133: <dt>U+0027 APOSTROPHE (')</dt>
3134: <dt>U+003C LESS-THAN SIGN (<)</dt>
3135: <dt>U+003D EQUALS SIGN (=)</dt>
3136: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3137: entry below.</dd>
3138:
3139: <dt>EOF</dt>
3140: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3141: <a href="#data-state">data state</a>.</dd>
3142:
3143: <dt>Anything else</dt>
3144: <dd>Start a new attribute in the current tag token. Set that
3145: attribute's name to the <a href="#current-input-character">current input character</a>, and its value to
3146: the empty string. Switch to the <a href="#attribute-name-state">attribute name
3147: state</a>.</dd>
3148:
1.755 mike 3149: </dl><h5 id="attribute-name-state"><span class="secno">8.2.4.35 </span><dfn>Attribute name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3150:
3151: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3152:
3153: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3154: <dt>U+000A LINE FEED (LF)</dt>
3155: <dt>U+000C FORM FEED (FF)</dt>
3156: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3157: <dt>U+0020 SPACE</dt>
3158: <dd>Switch to the <a href="#after-attribute-name-state">after attribute name state</a>.</dd>
3159:
3160: <dt>U+002F SOLIDUS (/)</dt>
3161: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3162:
3163: <dt>U+003D EQUALS SIGN (=)</dt>
3164: <dd>Switch to the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3165:
3166: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3167: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3168: state</a>.</dd>
3169:
3170: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 3171: <dd>Append the lowercase version of the <a href="#current-input-character">current input
3172: character</a> (add 0x0020 to the character's code point) to the
3173: current attribute's name. Stay in the <a href="#attribute-name-state">attribute name
1.1 mike 3174: state</a>.</dd>
3175:
3176: <dt>U+0022 QUOTATION MARK (")</dt>
3177: <dt>U+0027 APOSTROPHE (')</dt>
3178: <dt>U+003C LESS-THAN SIGN (<)</dt>
3179: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3180: entry below.</dd>
3181:
3182: <dt>EOF</dt>
3183: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3184: <a href="#data-state">data state</a>.</dd>
3185:
3186: <dt>Anything else</dt>
1.541 mike 3187: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3188: attribute's name. Stay in the <a href="#attribute-name-state">attribute name
3189: state</a>.</dd>
1.1 mike 3190:
3191: </dl><p>When the user agent leaves the attribute name state (and before
3192: emitting the tag token, if appropriate), the complete attribute's
3193: name must be compared to the other attributes on the same token;
3194: if there is already an attribute on the token with the exact same
3195: name, then this is a <a href="#parse-error">parse error</a> and the new
3196: attribute must be dropped, along with the value that gets
3197: associated with it (if any).</p>
3198:
3199:
1.755 mike 3200: <h5 id="after-attribute-name-state"><span class="secno">8.2.4.36 </span><dfn>After attribute name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3201:
3202: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3203:
3204: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3205: <dt>U+000A LINE FEED (LF)</dt>
3206: <dt>U+000C FORM FEED (FF)</dt>
3207: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3208: <dt>U+0020 SPACE</dt>
3209: <dd>Stay in the <a href="#after-attribute-name-state">after attribute name state</a>.</dd>
3210:
3211: <dt>U+002F SOLIDUS (/)</dt>
3212: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3213:
3214: <dt>U+003D EQUALS SIGN (=)</dt>
3215: <dd>Switch to the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3216:
3217: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3218: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3219: state</a>.</dd>
3220:
3221: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3222: <dd>Start a new attribute in the current tag token. Set that
1.541 mike 3223: attribute's name to the lowercase version of the <a href="#current-input-character">current
3224: input character</a> (add 0x0020 to the character's code point),
3225: and its value to the empty string. Switch to the <a href="#attribute-name-state">attribute
3226: name state</a>.</dd>
1.1 mike 3227:
3228: <dt>U+0022 QUOTATION MARK (")</dt>
3229: <dt>U+0027 APOSTROPHE (')</dt>
3230: <dt>U+003C LESS-THAN SIGN (<)</dt>
3231: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3232: entry below.</dd>
3233:
3234: <dt>EOF</dt>
3235: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3236: <a href="#data-state">data state</a>.</dd>
3237:
3238: <dt>Anything else</dt>
3239: <dd>Start a new attribute in the current tag token. Set that
1.541 mike 3240: attribute's name to the <a href="#current-input-character">current input character</a>, and
3241: its value to the empty string. Switch to the <a href="#attribute-name-state">attribute name
1.1 mike 3242: state</a>.</dd>
3243:
1.755 mike 3244: </dl><h5 id="before-attribute-value-state"><span class="secno">8.2.4.37 </span><dfn>Before attribute value state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3245:
3246: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3247:
3248: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3249: <dt>U+000A LINE FEED (LF)</dt>
3250: <dt>U+000C FORM FEED (FF)</dt>
3251: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3252: <dt>U+0020 SPACE</dt>
3253: <dd>Stay in the <a href="#before-attribute-value-state">before attribute value state</a>.</dd>
3254:
3255: <dt>U+0022 QUOTATION MARK (")</dt>
3256: <dd>Switch to the <a href="#attribute-value-double-quoted-state">attribute value (double-quoted) state</a>.</dd>
3257:
3258: <dt>U+0026 AMPERSAND (&)</dt>
3259: <dd>Switch to the <a href="#attribute-value-unquoted-state">attribute value (unquoted) state</a>
1.541 mike 3260: and reconsume this <a href="#current-input-character">current input character</a>.</dd>
1.1 mike 3261:
3262: <dt>U+0027 APOSTROPHE (')</dt>
3263: <dd>Switch to the <a href="#attribute-value-single-quoted-state">attribute value (single-quoted) state</a>.</dd>
3264:
3265: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3266: <dd><a href="#parse-error">Parse error</a>. Emit the current tag token. Switch to
3267: the <a href="#data-state">data state</a>.</dd>
3268:
3269: <dt>U+003C LESS-THAN SIGN (<)</dt>
3270: <dt>U+003D EQUALS SIGN (=)</dt>
1.463 mike 3271: <dt>U+0060 GRAVE ACCENT (`)</dt>
1.1 mike 3272: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3273: entry below.</dd>
3274:
3275: <dt>EOF</dt>
3276: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3277: <a href="#data-state">data state</a>.</dd>
3278:
3279: <dt>Anything else</dt>
3280: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3281: attribute's value. Switch to the <a href="#attribute-value-unquoted-state">attribute value (unquoted)
3282: state</a>.</dd>
3283:
1.755 mike 3284: </dl><h5 id="attribute-value-double-quoted-state"><span class="secno">8.2.4.38 </span><dfn>Attribute value (double-quoted) state</dfn></h5>
1.1 mike 3285:
3286: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3287:
3288: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
3289: <dd>Switch to the <a href="#after-attribute-value-quoted-state">after attribute value (quoted)
3290: state</a>.</dd>
3291:
3292: <dt>U+0026 AMPERSAND (&)</dt>
3293: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
3294: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3295: being U+0022 QUOTATION MARK (").</dd>
3296:
3297: <dt>EOF</dt>
3298: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3299: <a href="#data-state">data state</a>.</dd>
3300:
3301: <dt>Anything else</dt>
1.541 mike 3302: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3303: attribute's value. Stay in the <a href="#attribute-value-double-quoted-state">attribute value
3304: (double-quoted) state</a>.</dd>
1.1 mike 3305:
1.755 mike 3306: </dl><h5 id="attribute-value-single-quoted-state"><span class="secno">8.2.4.39 </span><dfn>Attribute value (single-quoted) state</dfn></h5>
1.1 mike 3307:
3308: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3309:
3310: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
3311: <dd>Switch to the <a href="#after-attribute-value-quoted-state">after attribute value (quoted)
3312: state</a>.</dd>
3313:
3314: <dt>U+0026 AMPERSAND (&)</dt>
3315: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
3316: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3317: being U+0027 APOSTROPHE (').</dd>
3318:
3319: <dt>EOF</dt>
3320: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3321: <a href="#data-state">data state</a>.</dd>
3322:
3323: <dt>Anything else</dt>
1.541 mike 3324: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3325: attribute's value. Stay in the <a href="#attribute-value-single-quoted-state">attribute value
3326: (single-quoted) state</a>.</dd>
1.1 mike 3327:
1.755 mike 3328: </dl><h5 id="attribute-value-unquoted-state"><span class="secno">8.2.4.40 </span><dfn>Attribute value (unquoted) state</dfn></h5>
1.1 mike 3329:
3330: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3331:
3332: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3333: <dt>U+000A LINE FEED (LF)</dt>
3334: <dt>U+000C FORM FEED (FF)</dt>
3335: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3336: <dt>U+0020 SPACE</dt>
3337: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3338:
3339: <dt>U+0026 AMPERSAND (&)</dt>
3340: <dd>Switch to the <a href="#character-reference-in-attribute-value-state">character reference in attribute value
1.299 mike 3341: state</a>, with the <a href="#additional-allowed-character">additional allowed character</a>
3342: being U+003E GREATER-THAN SIGN (>).</dd>
1.1 mike 3343:
3344: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3345: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3346: state</a>.</dd>
3347:
3348: <dt>U+0022 QUOTATION MARK (")</dt>
3349: <dt>U+0027 APOSTROPHE (')</dt>
3350: <dt>U+003C LESS-THAN SIGN (<)</dt>
3351: <dt>U+003D EQUALS SIGN (=)</dt>
1.463 mike 3352: <dt>U+0060 GRAVE ACCENT (`)</dt>
1.1 mike 3353: <dd><a href="#parse-error">Parse error</a>. Treat it as per the "anything else"
3354: entry below.</dd>
3355:
3356: <dt>EOF</dt>
3357: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3358: <a href="#data-state">data state</a>.</dd>
3359:
3360: <dt>Anything else</dt>
1.541 mike 3361: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3362: attribute's value. Stay in the <a href="#attribute-value-unquoted-state">attribute value (unquoted)
1.1 mike 3363: state</a>.</dd>
3364:
1.755 mike 3365: </dl><h5 id="character-reference-in-attribute-value-state"><span class="secno">8.2.4.41 </span><dfn>Character reference in attribute value state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3366:
3367: <p>Attempt to <a href="#consume-a-character-reference">consume a character reference</a>.</p>
3368:
3369: <p>If nothing is returned, append a U+0026 AMPERSAND character to
3370: the current attribute's value.</p>
3371:
3372: <p>Otherwise, append the returned character token to the current
3373: attribute's value.</p>
3374:
3375: <p>Finally, switch back to the attribute value state that you were
3376: in when were switched into this state.</p>
3377:
3378:
1.755 mike 3379: <h5 id="after-attribute-value-quoted-state"><span class="secno">8.2.4.42 </span><dfn>After attribute value (quoted) state</dfn></h5>
1.1 mike 3380:
3381: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3382:
3383: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3384: <dt>U+000A LINE FEED (LF)</dt>
3385: <dt>U+000C FORM FEED (FF)</dt>
3386: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3387: <dt>U+0020 SPACE</dt>
3388: <dd>Switch to the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3389:
3390: <dt>U+002F SOLIDUS (/)</dt>
3391: <dd>Switch to the <a href="#self-closing-start-tag-state">self-closing start tag state</a>.</dd>
3392:
3393: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3394: <dd>Emit the current tag token. Switch to the <a href="#data-state">data
3395: state</a>.</dd>
3396:
3397: <dt>EOF</dt>
3398: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3399: <a href="#data-state">data state</a>.</dd>
3400:
3401: <dt>Anything else</dt>
3402: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in
3403: the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3404:
1.755 mike 3405: </dl><h5 id="self-closing-start-tag-state"><span class="secno">8.2.4.43 </span><dfn>Self-closing start tag state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3406:
3407: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3408:
3409: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
3410: <dd>Set the <i>self-closing flag</i> of the current tag
3411: token. Emit the current tag token. Switch to the <a href="#data-state">data
3412: state</a>.</dd>
3413:
3414: <dt>EOF</dt>
3415: <dd><a href="#parse-error">Parse error</a>. Reconsume the EOF character in the
3416: <a href="#data-state">data state</a>.</dd>
3417:
3418: <dt>Anything else</dt>
3419: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in
3420: the <a href="#before-attribute-name-state">before attribute name state</a>.</dd>
3421:
1.755 mike 3422: </dl><h5 id="bogus-comment-state"><span class="secno">8.2.4.44 </span><dfn>Bogus comment state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3423:
3424: <p>Consume every character up to and including the first U+003E
3425: GREATER-THAN SIGN character (>) or the end of the file (EOF),
3426: whichever comes first. Emit a comment token whose data is the
3427: concatenation of all the characters starting from and including
3428: the character that caused the state machine to switch into the
3429: bogus comment state, up to and including the character immediately
3430: before the last consumed character (i.e. up to the character just
3431: before the U+003E or EOF character). (If the comment was started
3432: by the end of the file (EOF), the token is empty.)</p>
3433:
3434: <p>Switch to the <a href="#data-state">data state</a>.</p>
3435:
3436: <p>If the end of the file was reached, reconsume the EOF
3437: character.</p>
3438:
3439:
1.755 mike 3440: <h5 id="markup-declaration-open-state"><span class="secno">8.2.4.45 </span><dfn>Markup declaration open state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3441:
1.588 mike 3442: <p>If the next two characters are both U+002D HYPHEN-MINUS
3443: characters (-), consume those two characters, create a comment token
1.1 mike 3444: whose data is the empty string, and switch to the <a href="#comment-start-state">comment
3445: start state</a>.</p>
3446:
3447: <p>Otherwise, if the next seven characters are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
3448: case-insensitive</a> match for the word "DOCTYPE", then consume
3449: those characters and switch to the <a href="#doctype-state">DOCTYPE state</a>.</p>
3450:
3451: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
3452: content</a>" and the <a href="#current-node">current node</a> is not an element
1.724 mike 3453: in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a> and the next seven characters are
1.585 mike 3454: an <a href="infrastructure.html#case-sensitive">case-sensitive</a> match for the string "[CDATA[" (the
3455: five uppercase letters "CDATA" with a U+005B LEFT SQUARE BRACKET
3456: character before and after), then consume those characters and
3457: switch to the <a href="#cdata-section-state">CDATA section state</a>.</p>
1.1 mike 3458:
3459: <p>Otherwise, this is a <a href="#parse-error">parse error</a>. Switch to the
3460: <a href="#bogus-comment-state">bogus comment state</a>. The next character that is
3461: consumed, if any, is the first character that will be in the
3462: comment.</p>
3463:
3464:
1.755 mike 3465: <h5 id="comment-start-state"><span class="secno">8.2.4.46 </span><dfn>Comment start state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3466:
3467: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3468:
3469: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3470: <dd>Switch to the <a href="#comment-start-dash-state">comment start dash state</a>.</dd>
3471:
3472: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3473: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Switch to the
3474: <a href="#data-state">data state</a>.</dd> <!-- see comment in comment end state
3475: -->
3476:
3477: <dt>EOF</dt>
3478: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3479: the EOF character in the <a href="#data-state">data state</a>.</dd>
3480:
3481: <dt>Anything else</dt>
1.541 mike 3482: <dd>Append the <a href="#current-input-character">current input character</a> to the comment
3483: token's data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3484:
1.755 mike 3485: </dl><h5 id="comment-start-dash-state"><span class="secno">8.2.4.47 </span><dfn>Comment start dash state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3486:
3487: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3488:
3489: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3490: <dd>Switch to the <a href="#comment-end-state">comment end state</a></dd>
3491:
3492: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3493: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Switch to
3494: the <a href="#data-state">data state</a>.</dd>
3495:
3496: <dt>EOF</dt>
3497: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3498: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3499: in comment end state -->
3500:
3501: <dt>Anything else</dt>
1.541 mike 3502: <dd>Append a U+002D HYPHEN-MINUS character (-) and the
3503: <a href="#current-input-character">current input character</a> to the comment token's
3504: data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3505:
1.755 mike 3506: </dl><h5 id="comment-state"><span class="secno">8.2.4.48 </span><dfn id="comment">Comment state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3507:
3508: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3509:
3510: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3511: <dd>Switch to the <a href="#comment-end-dash-state">comment end dash state</a></dd>
3512:
3513: <dt>EOF</dt>
3514: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3515: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3516: in comment end state -->
3517:
3518: <dt>Anything else</dt>
1.541 mike 3519: <dd>Append the <a href="#current-input-character">current input character</a> to the comment
3520: token's data. Stay in the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3521:
1.755 mike 3522: </dl><h5 id="comment-end-dash-state"><span class="secno">8.2.4.49 </span><dfn>Comment end dash state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3523:
3524: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3525:
3526: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
3527: <dd>Switch to the <a href="#comment-end-state">comment end state</a></dd>
3528:
3529: <dt>EOF</dt>
3530: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume the
3531: EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see comment
3532: in comment end state -->
3533:
3534: <dt>Anything else</dt>
1.541 mike 3535: <dd>Append a U+002D HYPHEN-MINUS character (-) and the
3536: <a href="#current-input-character">current input character</a> to the comment token's
3537: data. Switch to the <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3538:
1.755 mike 3539: </dl><h5 id="comment-end-state"><span class="secno">8.2.4.50 </span><dfn>Comment end state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3540:
3541: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3542:
3543: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
3544: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3545: state</a>.</dd>
3546:
3547: <dt>U+0009 CHARACTER TABULATION</dt>
3548: <dt>U+000A LINE FEED (LF)</dt>
3549: <dt>U+000C FORM FEED (FF)</dt>
3550: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3551: <dt>U+0020 SPACE</dt>
1.588 mike 3552: <dd><a href="#parse-error">Parse error</a>. Append two U+002D HYPHEN-MINUS
3553: characters (-) and the <a href="#current-input-character">current input character</a> to the
1.541 mike 3554: comment token's data. Switch to the <a href="#comment-end-space-state">comment end space
3555: state</a>.</dd>
1.1 mike 3556:
3557: <dt>U+0021 EXCLAMATION MARK (!)</dt>
3558: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#comment-end-bang-state">comment end bang
3559: state</a>.</dd>
3560:
1.333 mike 3561: <dt>U+002D HYPHEN-MINUS (-)</dt>
3562: <dd><a href="#parse-error">Parse error</a>. Append a U+002D HYPHEN-MINUS
1.464 mike 3563: character (-) to the comment token's data. Stay in the
1.333 mike 3564: <a href="#comment-end-state">comment end state</a>.</dd>
3565:
1.1 mike 3566: <dt>EOF</dt>
3567: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3568: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- For
1.724 mike 3569: security reasons: otherwise, hostile user could put a <script type="text/javascript"> in
1.1 mike 3570: a comment e.g. in a blog comment and then DOS the server so that
1.724 mike 3571: the end tag isn't read, and then the commented <script type="text/javascript"> tag would
1.1 mike 3572: be treated as live code -->
3573:
3574: <dt>Anything else</dt>
1.588 mike 3575: <dd><a href="#parse-error">Parse error</a>. Append two U+002D HYPHEN-MINUS
3576: characters (-) and the <a href="#current-input-character">current input character</a> to the
1.541 mike 3577: comment token's data. Switch to the <a href="#comment-state">comment
3578: state</a>.</dd>
1.1 mike 3579:
1.755 mike 3580: </dl><h5 id="comment-end-bang-state"><span class="secno">8.2.4.51 </span><dfn>Comment end bang state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3581:
3582: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3583:
1.333 mike 3584: <dl class="switch"><dt>U+002D HYPHEN-MINUS (-)</dt>
1.588 mike 3585: <dd>Append two U+002D HYPHEN-MINUS characters (-) and a U+0021
1.464 mike 3586: EXCLAMATION MARK character (!) to the comment token's data. Switch
1.1 mike 3587: to the <a href="#comment-end-dash-state">comment end dash state</a>.</dd>
3588:
1.333 mike 3589: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3590: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3591: state</a>.</dd>
3592:
1.1 mike 3593: <dt>EOF</dt>
3594: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3595: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see
3596: comment in comment end state -->
3597:
3598: <dt>Anything else</dt>
1.588 mike 3599: <dd>Append two U+002D HYPHEN-MINUS characters (-), a U+0021
1.541 mike 3600: EXCLAMATION MARK character (!), and the <a href="#current-input-character">current input
3601: character</a> to the comment token's data. Switch to the
3602: <a href="#comment-state">comment state</a>.</dd>
1.1 mike 3603:
1.755 mike 3604: </dl><h5 id="comment-end-space-state"><span class="secno">8.2.4.52 </span><dfn>Comment end space state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3605:
3606: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3607:
1.333 mike 3608: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
1.1 mike 3609: <dt>U+000A LINE FEED (LF)</dt>
3610: <dt>U+000C FORM FEED (FF)</dt>
3611: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3612: <dt>U+0020 SPACE</dt>
1.541 mike 3613: <dd>Append the <a href="#current-input-character">current input character</a> to the comment token's data. Stay in
1.1 mike 3614: the <a href="#comment-end-space-state">comment end space state</a>.</dd>
3615:
1.333 mike 3616: <dt>U+002D HYPHEN-MINUS (-)</dt>
3617: <dd>Switch to the <a href="#comment-end-dash-state">comment end dash state</a>.</dd>
3618:
3619: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3620: <dd>Emit the comment token. Switch to the <a href="#data-state">data
3621: state</a>.</dd>
3622:
1.1 mike 3623: <dt>EOF</dt>
3624: <dd><a href="#parse-error">Parse error</a>. Emit the comment token. Reconsume
3625: the EOF character in the <a href="#data-state">data state</a>.</dd> <!-- see
3626: comment in comment end state -->
3627:
3628: <dt>Anything else</dt>
1.541 mike 3629: <dd>Append the <a href="#current-input-character">current input character</a> to the comment token's data. Switch
1.1 mike 3630: to the <a href="#comment-state">comment state</a>.</dd>
3631:
1.755 mike 3632: </dl><h5 id="doctype-state"><span class="secno">8.2.4.53 </span><dfn>DOCTYPE state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3633:
3634: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3635:
3636: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3637: <dt>U+000A LINE FEED (LF)</dt>
3638: <dt>U+000C FORM FEED (FF)</dt>
3639: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3640: <dt>U+0020 SPACE</dt>
3641: <dd>Switch to the <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
3642:
3643: <dt>EOF</dt>
3644: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3645: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Reconsume
3646: the EOF character in the <a href="#data-state">data state</a>.</dd>
3647:
3648: <dt>Anything else</dt>
1.608 mike 3649: <dd><a href="#parse-error">Parse error</a>. Reconsume the character in the
3650: <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
1.1 mike 3651:
1.755 mike 3652: </dl><h5 id="before-doctype-name-state"><span class="secno">8.2.4.54 </span><dfn>Before DOCTYPE name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3653:
3654: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3655:
3656: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3657: <dt>U+000A LINE FEED (LF)</dt>
3658: <dt>U+000C FORM FEED (FF)</dt>
3659: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3660: <dt>U+0020 SPACE</dt>
3661: <dd>Stay in the <a href="#before-doctype-name-state">before DOCTYPE name state</a>.</dd>
3662:
3663: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
3664: <dd>Create a new DOCTYPE token. Set the token's name to the
1.541 mike 3665: lowercase version of the <a href="#current-input-character">current input character</a> (add 0x0020 to the
1.1 mike 3666: character's code point). Switch to the <a href="#doctype-name-state">DOCTYPE name
3667: state</a>.</dd>
3668:
1.333 mike 3669: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3670: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3671: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Switch to
3672: the <a href="#data-state">data state</a>.</dd>
3673:
1.1 mike 3674: <dt>EOF</dt>
3675: <dd><a href="#parse-error">Parse error</a>. Create a new DOCTYPE token. Set its
3676: <i>force-quirks flag</i> to <i>on</i>. Emit the token. Reconsume
3677: the EOF character in the <a href="#data-state">data state</a>.</dd>
3678:
3679: <dt>Anything else</dt>
3680: <dd>Create a new DOCTYPE token. Set the token's name to the
3681: <a href="#current-input-character">current input character</a>. Switch to the <a href="#doctype-name-state">DOCTYPE name
3682: state</a>.</dd>
3683:
1.755 mike 3684: </dl><h5 id="doctype-name-state"><span class="secno">8.2.4.55 </span><dfn>DOCTYPE name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3685:
3686: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3687:
3688: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3689: <dt>U+000A LINE FEED (LF)</dt>
3690: <dt>U+000C FORM FEED (FF)</dt>
3691: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3692: <dt>U+0020 SPACE</dt>
3693: <dd>Switch to the <a href="#after-doctype-name-state">after DOCTYPE name state</a>.</dd>
3694:
3695: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3696: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3697: state</a>.</dd>
3698:
3699: <dt>U+0041 LATIN CAPITAL LETTER A through to U+005A LATIN CAPITAL LETTER Z</dt>
1.541 mike 3700: <dd>Append the lowercase version of the <a href="#current-input-character">current input
3701: character</a> (add 0x0020 to the character's code point) to the
3702: current DOCTYPE token's name. Stay in the <a href="#doctype-name-state">DOCTYPE name
3703: state</a>.</dd>
1.1 mike 3704:
3705: <dt>EOF</dt>
3706: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3707: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3708: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3709:
3710: <dt>Anything else</dt>
1.541 mike 3711: <dd>Append the <a href="#current-input-character">current input character</a> to the current
3712: DOCTYPE token's name. Stay in the <a href="#doctype-name-state">DOCTYPE name
3713: state</a>.</dd>
1.1 mike 3714:
1.755 mike 3715: </dl><h5 id="after-doctype-name-state"><span class="secno">8.2.4.56 </span><dfn>After DOCTYPE name state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3716:
3717: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3718:
3719: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3720: <dt>U+000A LINE FEED (LF)</dt>
3721: <dt>U+000C FORM FEED (FF)</dt>
3722: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3723: <dt>U+0020 SPACE</dt>
3724: <dd>Stay in the <a href="#after-doctype-name-state">after DOCTYPE name state</a>.</dd>
3725:
3726: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3727: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3728: state</a>.</dd>
3729:
3730: <dt>EOF</dt>
3731: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3732: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3733: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3734:
3735: <dt>Anything else</dt>
3736: <dd>
3737:
3738: <p>If the six characters starting from the <a href="#current-input-character">current input
3739: character</a> are an <a href="infrastructure.html#ascii-case-insensitive">ASCII case-insensitive</a> match
3740: for the word "PUBLIC", then consume those characters and switch to
1.444 mike 3741: the <a href="#after-doctype-public-keyword-state">after DOCTYPE public keyword state</a>.</p>
1.1 mike 3742:
3743: <p>Otherwise, if the six characters starting from the
3744: <a href="#current-input-character">current input character</a> are an <a href="infrastructure.html#ascii-case-insensitive">ASCII
3745: case-insensitive</a> match for the word "SYSTEM", then consume
1.444 mike 3746: those characters and switch to the <a href="#after-doctype-system-keyword-state">after DOCTYPE system
3747: keyword state</a>.</p>
1.1 mike 3748:
3749: <p>Otherwise, this is the <a href="#parse-error">parse error</a>. Set the
3750: DOCTYPE token's <i>force-quirks flag</i> to <i>on</i>. Switch to
3751: the <a href="#bogus-doctype-state">bogus DOCTYPE state</a>.</p>
3752:
3753: </dd>
3754:
1.755 mike 3755: </dl><h5 id="after-doctype-public-keyword-state"><span class="secno">8.2.4.57 </span><dfn>After DOCTYPE public keyword state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.444 mike 3756:
3757: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3758:
3759: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3760: <dt>U+000A LINE FEED (LF)</dt>
3761: <dt>U+000C FORM FEED (FF)</dt>
3762: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3763: <dt>U+0020 SPACE</dt>
3764: <dd>Switch to the <a href="#before-doctype-public-identifier-state">before DOCTYPE public identifier
3765: state</a>.</dd>
3766:
1.620 mike 3767: <dt>U+0022 QUOTATION MARK (")</dt>
3768: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's public
3769: identifier to the empty string (not missing), then switch to the
3770: <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public identifier (double-quoted) state</a>.</dd>
3771:
3772: <dt>U+0027 APOSTROPHE (')</dt>
3773: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's public
3774: identifier to the empty string (not missing), then switch to the
3775: <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public identifier (single-quoted) state</a>.</dd>
3776:
3777: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3778: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3779: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3780: token. Switch to the <a href="#data-state">data state</a>.</dd>
3781:
1.444 mike 3782: <dt>EOF</dt>
3783: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3784: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3785: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3786:
3787: <dt>Anything else</dt>
1.620 mike 3788: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3789: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3790: DOCTYPE state</a>.</dd>
1.444 mike 3791:
1.755 mike 3792: </dl><h5 id="before-doctype-public-identifier-state"><span class="secno">8.2.4.58 </span><dfn>Before DOCTYPE public identifier state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3793:
3794: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3795:
3796: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3797: <dt>U+000A LINE FEED (LF)</dt>
3798: <dt>U+000C FORM FEED (FF)</dt>
3799: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3800: <dt>U+0020 SPACE</dt>
3801: <dd>Stay in the <a href="#before-doctype-public-identifier-state">before DOCTYPE public identifier state</a>.</dd>
3802:
3803: <dt>U+0022 QUOTATION MARK (")</dt>
3804: <dd>Set the DOCTYPE token's public identifier to the empty string
3805: (not missing), then switch to the <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public identifier
3806: (double-quoted) state</a>.</dd>
3807:
3808: <dt>U+0027 APOSTROPHE (')</dt>
3809: <dd>Set the DOCTYPE token's public identifier to the empty string
3810: (not missing), then switch to the <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public identifier
3811: (single-quoted) state</a>.</dd>
3812:
3813: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3814: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3815: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3816: token. Switch to the <a href="#data-state">data state</a>.</dd>
3817:
3818: <dt>EOF</dt>
3819: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3820: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3821: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3822:
3823: <dt>Anything else</dt>
3824: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3825: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3826: DOCTYPE state</a>.</dd>
3827:
1.755 mike 3828: </dl><h5 id="doctype-public-identifier-double-quoted-state"><span class="secno">8.2.4.59 </span><dfn>DOCTYPE public identifier (double-quoted) state</dfn></h5>
1.1 mike 3829:
3830: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3831:
3832: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
3833: <dd>Switch to the <a href="#after-doctype-public-identifier-state">after DOCTYPE public identifier state</a>.</dd>
3834:
3835: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3836: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3837: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3838: token. Switch to the <a href="#data-state">data state</a>.</dd>
3839:
3840: <dt>EOF</dt>
3841: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3842: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3843: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3844:
3845: <dt>Anything else</dt>
3846: <dd>Append the <a href="#current-input-character">current input character</a> to the current DOCTYPE
3847: token's public identifier. Stay in the <a href="#doctype-public-identifier-double-quoted-state">DOCTYPE public
3848: identifier (double-quoted) state</a>.</dd>
3849:
1.755 mike 3850: </dl><h5 id="doctype-public-identifier-single-quoted-state"><span class="secno">8.2.4.60 </span><dfn>DOCTYPE public identifier (single-quoted) state</dfn></h5>
1.1 mike 3851:
3852: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3853:
3854: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
3855: <dd>Switch to the <a href="#after-doctype-public-identifier-state">after DOCTYPE public identifier state</a>.</dd>
3856:
3857: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3858: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3859: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3860: token. Switch to the <a href="#data-state">data state</a>.</dd>
3861:
3862: <dt>EOF</dt>
3863: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3864: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3865: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3866:
3867: <dt>Anything else</dt>
3868: <dd>Append the <a href="#current-input-character">current input character</a> to the current DOCTYPE
3869: token's public identifier. Stay in the <a href="#doctype-public-identifier-single-quoted-state">DOCTYPE public
3870: identifier (single-quoted) state</a>.</dd>
3871:
1.755 mike 3872: </dl><h5 id="after-doctype-public-identifier-state"><span class="secno">8.2.4.61 </span><dfn>After DOCTYPE public identifier state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3873:
3874: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3875:
3876: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3877: <dt>U+000A LINE FEED (LF)</dt>
3878: <dt>U+000C FORM FEED (FF)</dt>
3879: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3880: <dt>U+0020 SPACE</dt>
1.541 mike 3881: <dd>Switch to the <a href="#between-doctype-public-and-system-identifiers-state">between DOCTYPE public and system
3882: identifiers state</a>.</dd>
1.444 mike 3883:
3884: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3885: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3886: state</a>.</dd>
3887:
3888: <dt>U+0022 QUOTATION MARK (")</dt>
3889: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3890: identifier to the empty string (not missing), then switch to the
3891: <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier (double-quoted) state</a>.</dd>
3892:
3893: <dt>U+0027 APOSTROPHE (')</dt>
3894: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3895: identifier to the empty string (not missing), then switch to the
3896: <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier (single-quoted) state</a>.</dd>
3897:
3898: <dt>EOF</dt>
3899: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3900: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3901: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3902:
3903: <dt>Anything else</dt>
3904: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3905: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3906: DOCTYPE state</a>.</dd>
3907:
1.755 mike 3908: </dl><h5 id="between-doctype-public-and-system-identifiers-state"><span class="secno">8.2.4.62 </span><dfn>Between DOCTYPE public and system identifiers state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.444 mike 3909:
3910: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3911:
3912: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3913: <dt>U+000A LINE FEED (LF)</dt>
3914: <dt>U+000C FORM FEED (FF)</dt>
3915: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3916: <dt>U+0020 SPACE</dt>
1.541 mike 3917: <dd>Stay in the <a href="#between-doctype-public-and-system-identifiers-state">between DOCTYPE public and system identifiers
3918: state</a>.</dd>
1.444 mike 3919:
3920: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3921: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
3922: state</a>.</dd>
1.1 mike 3923:
3924: <dt>U+0022 QUOTATION MARK (")</dt>
3925: <dd>Set the DOCTYPE token's system identifier to the empty string
3926: (not missing), then switch to the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier
3927: (double-quoted) state</a>.</dd>
3928:
3929: <dt>U+0027 APOSTROPHE (')</dt>
3930: <dd>Set the DOCTYPE token's system identifier to the empty string
3931: (not missing), then switch to the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier
3932: (single-quoted) state</a>.</dd>
3933:
3934: <dt>EOF</dt>
3935: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3936: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3937: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3938:
3939: <dt>Anything else</dt>
3940: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3941: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3942: DOCTYPE state</a>.</dd>
3943:
1.755 mike 3944: </dl><h5 id="after-doctype-system-keyword-state"><span class="secno">8.2.4.63 </span><dfn>After DOCTYPE system keyword state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.444 mike 3945:
3946: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3947:
3948: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3949: <dt>U+000A LINE FEED (LF)</dt>
3950: <dt>U+000C FORM FEED (FF)</dt>
3951: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3952: <dt>U+0020 SPACE</dt>
3953: <dd>Switch to the <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier
3954: state</a>.</dd>
3955:
1.620 mike 3956: <dt>U+0022 QUOTATION MARK (")</dt>
3957: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3958: identifier to the empty string (not missing), then switch to the
3959: <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier (double-quoted) state</a>.</dd>
3960:
3961: <dt>U+0027 APOSTROPHE (')</dt>
3962: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's system
3963: identifier to the empty string (not missing), then switch to the
3964: <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier (single-quoted) state</a>.</dd>
3965:
3966: <dt>U+003E GREATER-THAN SIGN (>)</dt>
3967: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3968: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
3969: token. Switch to the <a href="#data-state">data state</a>.</dd>
3970:
1.444 mike 3971: <dt>EOF</dt>
3972: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3973: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
3974: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
3975:
3976: <dt>Anything else</dt>
1.620 mike 3977: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
3978: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
3979: DOCTYPE state</a>.</dd>
1.444 mike 3980:
1.755 mike 3981: </dl><h5 id="before-doctype-system-identifier-state"><span class="secno">8.2.4.64 </span><dfn>Before DOCTYPE system identifier state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 3982:
3983: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
3984:
3985: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
3986: <dt>U+000A LINE FEED (LF)</dt>
3987: <dt>U+000C FORM FEED (FF)</dt>
3988: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
3989: <dt>U+0020 SPACE</dt>
3990: <dd>Stay in the <a href="#before-doctype-system-identifier-state">before DOCTYPE system identifier state</a>.</dd>
3991:
3992: <dt>U+0022 QUOTATION MARK (")</dt>
3993: <dd>Set the DOCTYPE token's system identifier to the empty string
3994: (not missing), then switch to the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system identifier
3995: (double-quoted) state</a>.</dd>
3996:
3997: <dt>U+0027 APOSTROPHE (')</dt>
3998: <dd>Set the DOCTYPE token's system identifier to the empty string
3999: (not missing), then switch to the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system identifier
4000: (single-quoted) state</a>.</dd>
4001:
4002: <dt>U+003E GREATER-THAN SIGN (>)</dt>
4003: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4004: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
4005: token. Switch to the <a href="#data-state">data state</a>.</dd>
4006:
4007: <dt>EOF</dt>
4008: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4009: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
4010: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
4011:
4012: <dt>Anything else</dt>
4013: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4014: <i>force-quirks flag</i> to <i>on</i>. Switch to the <a href="#bogus-doctype-state">bogus
4015: DOCTYPE state</a>.</dd>
4016:
1.755 mike 4017: </dl><h5 id="doctype-system-identifier-double-quoted-state"><span class="secno">8.2.4.65 </span><dfn>DOCTYPE system identifier (double-quoted) state</dfn></h5>
1.1 mike 4018:
4019: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
4020:
4021: <dl class="switch"><dt>U+0022 QUOTATION MARK (")</dt>
1.541 mike 4022: <dd>Switch to the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
4023: state</a>.</dd>
1.1 mike 4024:
4025: <dt>U+003E GREATER-THAN SIGN (>)</dt>
4026: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4027: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
4028: token. Switch to the <a href="#data-state">data state</a>.</dd>
4029:
4030: <dt>EOF</dt>
4031: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4032: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
4033: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
4034:
4035: <dt>Anything else</dt>
1.541 mike 4036: <dd>Append the <a href="#current-input-character">current input character</a> to the current
4037: DOCTYPE token's system identifier. Stay in the <a href="#doctype-system-identifier-double-quoted-state">DOCTYPE system
1.1 mike 4038: identifier (double-quoted) state</a>.</dd>
4039:
1.755 mike 4040: </dl><h5 id="doctype-system-identifier-single-quoted-state"><span class="secno">8.2.4.66 </span><dfn>DOCTYPE system identifier (single-quoted) state</dfn></h5>
1.1 mike 4041:
4042: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
4043:
4044: <dl class="switch"><dt>U+0027 APOSTROPHE (')</dt>
1.541 mike 4045: <dd>Switch to the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
4046: state</a>.</dd>
1.1 mike 4047:
4048: <dt>U+003E GREATER-THAN SIGN (>)</dt>
4049: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4050: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE
4051: token. Switch to the <a href="#data-state">data state</a>.</dd>
4052:
4053: <dt>EOF</dt>
4054: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4055: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
4056: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
4057:
4058: <dt>Anything else</dt>
1.541 mike 4059: <dd>Append the <a href="#current-input-character">current input character</a> to the current
4060: DOCTYPE token's system identifier. Stay in the <a href="#doctype-system-identifier-single-quoted-state">DOCTYPE system
1.1 mike 4061: identifier (single-quoted) state</a>.</dd>
4062:
1.755 mike 4063: </dl><h5 id="after-doctype-system-identifier-state"><span class="secno">8.2.4.67 </span><dfn>After DOCTYPE system identifier state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4064:
4065: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
4066:
4067: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
4068: <dt>U+000A LINE FEED (LF)</dt>
4069: <dt>U+000C FORM FEED (FF)</dt>
4070: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
4071: <dt>U+0020 SPACE</dt>
1.541 mike 4072: <dd>Stay in the <a href="#after-doctype-system-identifier-state">after DOCTYPE system identifier
4073: state</a>.</dd>
1.1 mike 4074:
4075: <dt>U+003E GREATER-THAN SIGN (>)</dt>
4076: <dd>Emit the current DOCTYPE token. Switch to the <a href="#data-state">data
4077: state</a>.</dd>
4078:
4079: <dt>EOF</dt>
4080: <dd><a href="#parse-error">Parse error</a>. Set the DOCTYPE token's
4081: <i>force-quirks flag</i> to <i>on</i>. Emit that DOCTYPE token.
4082: Reconsume the EOF character in the <a href="#data-state">data state</a>.</dd>
4083:
4084: <dt>Anything else</dt>
4085: <dd><a href="#parse-error">Parse error</a>. Switch to the <a href="#bogus-doctype-state">bogus DOCTYPE
4086: state</a>. (This does <em>not</em> set the DOCTYPE token's
4087: <i>force-quirks flag</i> to <i>on</i>.)</dd>
4088:
1.755 mike 4089: </dl><h5 id="bogus-doctype-state"><span class="secno">8.2.4.68 </span><dfn>Bogus DOCTYPE state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4090:
4091: <p>Consume the <a href="#next-input-character">next input character</a>:</p>
4092:
4093: <dl class="switch"><dt>U+003E GREATER-THAN SIGN (>)</dt>
4094: <dd>Emit the DOCTYPE token. Switch to the <a href="#data-state">data
4095: state</a>.</dd>
4096:
4097: <dt>EOF</dt>
4098: <dd>Emit the DOCTYPE token. Reconsume the EOF character in the
4099: <a href="#data-state">data state</a>.</dd>
4100:
4101: <dt>Anything else</dt>
4102: <dd>Stay in the <a href="#bogus-doctype-state">bogus DOCTYPE state</a>.</dd>
4103:
1.755 mike 4104: </dl><h5 id="cdata-section-state"><span class="secno">8.2.4.69 </span><dfn>CDATA section state</dfn></h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4105:
4106: <p>Consume every character up to the next occurrence of the three
4107: character sequence U+005D RIGHT SQUARE BRACKET U+005D RIGHT SQUARE
4108: BRACKET U+003E GREATER-THAN SIGN (<code title="">]]></code>), or the
4109: end of the file (EOF), whichever comes first. Emit a series of
4110: character tokens consisting of all the characters consumed except
4111: the matching three character sequence at the end (if one was found
4112: before the end of the file).</p>
4113:
4114: <p>Switch to the <a href="#data-state">data state</a>.</p>
4115:
4116: <p>If the end of the file was reached, reconsume the EOF
4117: character.</p>
4118:
4119:
4120:
1.755 mike 4121: <h5 id="tokenizing-character-references"><span class="secno">8.2.4.70 </span>Tokenizing character references</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4122:
4123: <p>This section defines how to <dfn id="consume-a-character-reference">consume a character
4124: reference</dfn>. This definition is used when parsing character
1.299 mike 4125: references <a href="#character-reference-in-data-state" title="character reference in data state">in
1.1 mike 4126: text</a> and <a href="#character-reference-in-attribute-value-state" title="character reference in attribute value
4127: state">in attributes</a>.</p>
4128:
4129: <p>The behavior depends on the identity of the next character (the
4130: one immediately after the U+0026 AMPERSAND character):</p>
4131:
4132: <dl class="switch"><dt>U+0009 CHARACTER TABULATION</dt>
4133: <dt>U+000A LINE FEED (LF)</dt>
4134: <dt>U+000C FORM FEED (FF)</dt>
4135: <!--<dt>U+000D CARRIAGE RETURN (CR)</dt>-->
4136: <dt>U+0020 SPACE</dt>
4137: <dt>U+003C LESS-THAN SIGN</dt>
4138: <dt>U+0026 AMPERSAND</dt>
4139: <dt>EOF</dt>
4140: <dt>The <dfn id="additional-allowed-character">additional allowed character</dfn>, if there is one</dt>
4141:
4142: <dd>Not a character reference. No characters are consumed, and
4143: nothing is returned. (This is not an error, either.)</dd>
4144:
4145:
4146: <dt>U+0023 NUMBER SIGN (#)</dt>
4147:
4148: <dd>
4149:
4150: <p>Consume the U+0023 NUMBER SIGN.</p>
4151:
4152: <p>The behavior further depends on the character after the U+0023
4153: NUMBER SIGN:</p>
4154:
4155: <dl class="switch"><dt>U+0078 LATIN SMALL LETTER X</dt>
4156: <dt>U+0058 LATIN CAPITAL LETTER X</dt>
4157:
4158: <dd>
4159:
4160: <p>Consume the X.</p>
4161:
4162: <p>Follow the steps below, but using the range of characters
1.464 mike 4163: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0061 LATIN
4164: SMALL LETTER A to U+0066 LATIN SMALL LETTER F, and U+0041 LATIN
4165: CAPITAL LETTER A to U+0046 LATIN CAPITAL LETTER F (in other
4166: words, 0-9, A-F, a-f).</p>
1.1 mike 4167:
4168: <p>When it comes to interpreting the number, interpret it as a
4169: hexadecimal number.</p>
4170:
4171: </dd>
4172:
4173:
4174: <dt>Anything else</dt>
4175:
4176: <dd>
4177:
4178: <p>Follow the steps below, but using the range of characters
1.464 mike 4179: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9).</p>
1.1 mike 4180:
4181: <p>When it comes to interpreting the number, interpret it as a
4182: decimal number.</p>
4183:
4184: </dd>
4185:
4186: </dl><p>Consume as many characters as match the range of characters
4187: given above.</p>
4188:
4189: <p>If no characters match the range, then don't consume any
4190: characters (and unconsume the U+0023 NUMBER SIGN character and, if
4191: appropriate, the X character). This is a <a href="#parse-error">parse
4192: error</a>; nothing is returned.</p>
4193:
4194: <p>Otherwise, if the next character is a U+003B SEMICOLON, consume
4195: that too. If it isn't, there is a <a href="#parse-error">parse
4196: error</a>.</p>
4197:
4198: <p>If one or more characters match the range, then take them all
4199: and interpret the string of characters as a number (either
4200: hexadecimal or decimal as appropriate).</p>
4201:
4202: <p>If that number is one of the numbers in the first column of the
4203: following table, then this is a <a href="#parse-error">parse error</a>. Find the
4204: row with that number in the first column, and return a character
4205: token for the Unicode character given in the second column of that
4206: row.</p>
4207:
4208: <table><thead><tr><th>Number </th><th colspan="2">Unicode character
4209: </th></tr></thead><tbody><tr><td>0x00 </td><td>U+FFFD </td><td>REPLACEMENT CHARACTER
1.882 mike 4210: </td></tr><tr><td>0x0D </td><td>U+000D </td><td>CARRIAGE RETURN (CR)
1.464 mike 4211: </td></tr><tr><td>0x80 </td><td>U+20AC </td><td>EURO SIGN (€)
1.1 mike 4212: </td></tr><tr><td>0x81 </td><td>U+0081 </td><td><control>
1.464 mike 4213: </td></tr><tr><td>0x82 </td><td>U+201A </td><td>SINGLE LOW-9 QUOTATION MARK (‚)
4214: </td></tr><tr><td>0x83 </td><td>U+0192 </td><td>LATIN SMALL LETTER F WITH HOOK (ƒ)
4215: </td></tr><tr><td>0x84 </td><td>U+201E </td><td>DOUBLE LOW-9 QUOTATION MARK („)
4216: </td></tr><tr><td>0x85 </td><td>U+2026 </td><td>HORIZONTAL ELLIPSIS (…)
4217: </td></tr><tr><td>0x86 </td><td>U+2020 </td><td>DAGGER (†)
4218: </td></tr><tr><td>0x87 </td><td>U+2021 </td><td>DOUBLE DAGGER (‡)
4219: </td></tr><tr><td>0x88 </td><td>U+02C6 </td><td>MODIFIER LETTER CIRCUMFLEX ACCENT (ˆ)
4220: </td></tr><tr><td>0x89 </td><td>U+2030 </td><td>PER MILLE SIGN (‰)
4221: </td></tr><tr><td>0x8A </td><td>U+0160 </td><td>LATIN CAPITAL LETTER S WITH CARON (Š)
4222: </td></tr><tr><td>0x8B </td><td>U+2039 </td><td>SINGLE LEFT-POINTING ANGLE QUOTATION MARK (‹)
4223: </td></tr><tr><td>0x8C </td><td>U+0152 </td><td>LATIN CAPITAL LIGATURE OE (Œ)
1.1 mike 4224: </td></tr><tr><td>0x8D </td><td>U+008D </td><td><control>
1.464 mike 4225: </td></tr><tr><td>0x8E </td><td>U+017D </td><td>LATIN CAPITAL LETTER Z WITH CARON (Ž)
1.1 mike 4226: </td></tr><tr><td>0x8F </td><td>U+008F </td><td><control>
4227: </td></tr><tr><td>0x90 </td><td>U+0090 </td><td><control>
1.464 mike 4228: </td></tr><tr><td>0x91 </td><td>U+2018 </td><td>LEFT SINGLE QUOTATION MARK (‘)
4229: </td></tr><tr><td>0x92 </td><td>U+2019 </td><td>RIGHT SINGLE QUOTATION MARK (’)
4230: </td></tr><tr><td>0x93 </td><td>U+201C </td><td>LEFT DOUBLE QUOTATION MARK (“)
4231: </td></tr><tr><td>0x94 </td><td>U+201D </td><td>RIGHT DOUBLE QUOTATION MARK (”)
4232: </td></tr><tr><td>0x95 </td><td>U+2022 </td><td>BULLET (•)
4233: </td></tr><tr><td>0x96 </td><td>U+2013 </td><td>EN DASH (–)
4234: </td></tr><tr><td>0x97 </td><td>U+2014 </td><td>EM DASH (—)
4235: </td></tr><tr><td>0x98 </td><td>U+02DC </td><td>SMALL TILDE (˜)
4236: </td></tr><tr><td>0x99 </td><td>U+2122 </td><td>TRADE MARK SIGN (™)
4237: </td></tr><tr><td>0x9A </td><td>U+0161 </td><td>LATIN SMALL LETTER S WITH CARON (š)
4238: </td></tr><tr><td>0x9B </td><td>U+203A </td><td>SINGLE RIGHT-POINTING ANGLE QUOTATION MARK (›)
4239: </td></tr><tr><td>0x9C </td><td>U+0153 </td><td>LATIN SMALL LIGATURE OE (œ)
1.1 mike 4240: </td></tr><tr><td>0x9D </td><td>U+009D </td><td><control>
1.464 mike 4241: </td></tr><tr><td>0x9E </td><td>U+017E </td><td>LATIN SMALL LETTER Z WITH CARON (ž)
4242: </td></tr><tr><td>0x9F </td><td>U+0178 </td><td>LATIN CAPITAL LETTER Y WITH DIAERESIS (Ÿ)
1.315 mike 4243: </td></tr></tbody></table><p>Otherwise, if the number is in the range 0xD800 to 0xDFFF<!--
4244: surrogates not allowed; see the comment in the "preprocessing the
4245: input stream" section for details --> or is greater than 0x10FFFF,
4246: then this is a <a href="#parse-error">parse error</a>. Return a U+FFFD
4247: REPLACEMENT CHARACTER.</p>
1.18 mike 4248:
4249: <p>Otherwise, return a character token for the Unicode character
1.1 mike 4250: whose code point is that number.
4251:
4252: <!-- this is the same as the equivalent list in the input stream
4253: section -->
4254: If the number is in the range 0x0001 to 0x0008, <!-- HT, LF
4255: allowed --> <!-- U+000B is in the next list --> <!-- FF, CR
4256: allowed --> 0x000E to 0x001F, <!-- ASCII allowed --> 0x007F <!--to
1.315 mike 4257: 0x0084, (0x0085 NEL not allowed), 0x0086--> to 0x009F, 0xFDD0 to
4258: 0xFDEF, or is one of 0x000B, 0xFFFE, 0xFFFF, 0x1FFFE, 0x1FFFF,
4259: 0x2FFFE, 0x2FFFF, 0x3FFFE, 0x3FFFF, 0x4FFFE, 0x4FFFF, 0x5FFFE,
4260: 0x5FFFF, 0x6FFFE, 0x6FFFF, 0x7FFFE, 0x7FFFF, 0x8FFFE, 0x8FFFF,
4261: 0x9FFFE, 0x9FFFF, 0xAFFFE, 0xAFFFF, 0xBFFFE, 0xBFFFF, 0xCFFFE,
4262: 0xCFFFF, 0xDFFFE, 0xDFFFF, 0xEFFFE, 0xEFFFF, 0xFFFFE, 0xFFFFF,
4263: 0x10FFFE, or 0x10FFFF, then this is a <a href="#parse-error">parse
4264: error</a>.</p>
1.1 mike 4265:
4266: </dd>
4267:
4268:
4269: <dt>Anything else</dt>
4270:
4271: <dd>
4272:
4273: <p>Consume the maximum number of characters possible, with the
4274: consumed characters matching one of the identifiers in the first
4275: column of the <a href="named-character-references.html#named-character-references">named character references</a> table (in a
4276: <a href="infrastructure.html#case-sensitive">case-sensitive</a> manner).</p>
4277:
4278: <p>If no match can be made, then this is a <a href="#parse-error">parse
4279: error</a>. No characters are consumed, and nothing is
4280: returned.</p>
4281:
1.588 mike 4282: <p>If the last character matched is not a U+003B SEMICOLON
4283: character (;), there is a <a href="#parse-error">parse error</a>.</p>
1.1 mike 4284:
4285: <p>If the character reference is being consumed <a href="#character-reference-in-attribute-value-state" title="character reference in attribute value state">as part of an
4286: attribute</a>, and the last character matched is not a U+003B
1.588 mike 4287: SEMICOLON character (;), and the next character is in the range
4288: U+0030 DIGIT ZERO (0) to U+0039 DIGIT NINE (9), U+0041 LATIN
4289: CAPITAL LETTER A to U+005A LATIN CAPITAL LETTER Z, or U+0061 LATIN
4290: SMALL LETTER A to U+007A LATIN SMALL LETTER Z, then, for
4291: historical reasons, all the characters that were matched after the
4292: U+0026 AMPERSAND character (&) must be unconsumed, and nothing
4293: is returned.</p>
1.1 mike 4294:
4295: <p>Otherwise, return a character token for the character
4296: corresponding to the character reference name (as given by the
4297: second column of the <a href="named-character-references.html#named-character-references">named character references</a>
4298: table).</p>
4299:
4300: <div class="example">
4301:
4302: <p>If the markup contains <code title="">I'm &notit; I tell
4303: you</code>, the character reference is parsed as "not", as in,
4304: <code title="">I'm ¬it; I tell you</code>. But if the markup
4305: was <code title="">I'm &notin; I tell you</code>, the
4306: character reference would be parsed as "notin;", resulting in
4307: <code title="">I'm ∉ I tell you</code>.</p>
4308:
4309: </div>
4310:
4311: </dd>
4312:
1.266 mike 4313: </dl></div><div class="impl">
4314:
1.363 mike 4315: <!-- v2: One thing that this doesn't define is handling deeply
4316: nested documents. There are compatibility requirements around that:
4317: you can't throw away the elements altogether, consider Tux made only
4318: with opening <font> elements, one per character. Seems that the best
4319: thing to do is to close some formatting elements from the middle of
4320: the stack when you hit a limit, or something. -->
4321:
1.755 mike 4322: <h4 id="tree-construction"><span class="secno">8.2.5 </span><dfn>Tree construction</dfn></h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4323:
4324: <p>The input to the tree construction stage is a sequence of tokens
4325: from the <a href="#tokenization">tokenization</a> stage. The tree construction
1.810 mike 4326: stage is associated with a DOM <code><a href="infrastructure.html#document">Document</a></code> object when a
1.1 mike 4327: parser is created. The "output" of this stage consists of
4328: dynamically modifying or extending that document's DOM tree.</p>
4329:
4330: <p>This specification does not define when an interactive user agent
1.810 mike 4331: has to render the <code><a href="infrastructure.html#document">Document</a></code> so that it is available to
1.1 mike 4332: the user, or when it has to begin accepting user input.</p>
4333:
4334: <p>As each token is emitted from the tokenizer, the user agent must
4335: process the token according to the rules given in the section
4336: corresponding to the current <a href="#insertion-mode">insertion mode</a>.</p>
4337:
4338: <p>When the steps below require the UA to <dfn id="insert-a-character">insert a
4339: character</dfn> into a node, if that node has a child immediately
4340: before where the character is to be inserted, and that child is a
1.882 mike 4341: <code><a href="infrastructure.html#text">Text</a></code> node, and that <code><a href="infrastructure.html#text">Text</a></code> node was the last
1.1 mike 4342: node that the parser inserted into the document, then the character
1.882 mike 4343: must be appended to that <code><a href="infrastructure.html#text">Text</a></code> node; otherwise, a new
4344: <code><a href="infrastructure.html#text">Text</a></code> node whose data is just that character must be
1.1 mike 4345: inserted in the appropriate place.</p>
4346:
4347: <div class="example">
4348:
4349: <p>Here are some sample inputs to the parser and the corresponding
4350: number of text nodes that they result in, assuming a user agent
4351: that executes scripts.</p>
4352:
4353: <table><thead><tr><th>Input </th><th>Number of text nodes
4354: </th></tr></thead><tbody><tr><td><pre>A<script>
4355: var script = document.getElementsByTagName('script')[0];
4356: document.body.removeChild(script);
4357: </script>B</pre>
4358: </td><td>Two adjacent text nodes in the document, containing "A" and "B".
4359: </td></tr><tr><td><pre>A<script>
4360: var text = document.createTextNode('B');
4361: document.body.appendChild(text);
4362: </script>C</pre>
4363: </td><td>Four text nodes; "A" before the script, the script's contents, "B" after the script, and then, immediately after that, "C".
4364: </td></tr><tr><td><pre>A<script>
4365: var text = document.getElementsByTagName('script')[0].firstChild;
4366: text.data = 'B';
4367: document.body.appendChild(text);
4368: </script>B</pre>
4369: </td><td>Two adjacent text nodes in the document, containing "A" and "BB".
4370: </td></tr><tr><td><pre>A<table>B<tr>C</tr>C</table></pre>
4371: </td><td>Three adjacent text nodes before the table, containing "A", "B", and "CC" respectively. (This is caused by <a href="#foster-parent" title="foster parent">foster parenting</a>.)
4372: </td></tr><tr><td><pre>A<table><tr> B</tr> B</table></pre>
4373: </td><td>Two adjacent text nodes before the table, containing "A" and " B B" (space-B-space-B) respectively. (This is caused by <a href="#foster-parent" title="foster parent">foster parenting</a>.)
4374: </td></tr><tr><td><pre>A<table><tr> B</tr> </em>C</table></pre>
4375: </td><td>Three adjacent text nodes before the table, containing "A", " B" (space-B), and "C" respectively, and one text node inside the table (as a child of a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>) with a single space character. (Space characters separated from non-space characters by non-character tokens are not affected by <a href="#foster-parent" title="foster parent">foster parenting</a>, even if those other tokens then get ignored.)
4376: </td></tr></tbody></table></div>
4377:
4378: <p id="mutation-during-parsing">DOM mutation events must not fire
4379: for changes caused by the UA parsing the document. (Conceptually,
4380: the parser is not mutating the DOM, it is constructing it.) This
1.159 mike 4381: includes the parsing of any content inserted using <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code> and <code title="dom-document-writeln"><a href="embedded-content-0.html#dom-document-writeln">document.writeln()</a></code> calls. <a href="references.html#refsDOMEVENTS">[DOMEVENTS]</a></p>
1.1 mike 4382:
4383: <p class="note">Not all of the tag names mentioned below are
4384: conformant tag names in this specification; many are included to
4385: handle legacy content. They still form part of the algorithm that
4386: implementations are required to implement to claim conformance.</p>
4387:
4388: <p class="note">The algorithm described below places no limit on the
4389: depth of the DOM tree generated, or on the length of tag names,
4390: attribute names, attribute values, text nodes, etc. While
4391: implementors are encouraged to avoid arbitrary limits, it is
4392: recognized that <a href="infrastructure.html#hardwareLimitations">practical
1.445 mike 4393: concerns</a> will likely force user agents to impose nesting depth
4394: constraints.</p>
1.1 mike 4395:
4396:
1.755 mike 4397: <h5 id="creating-and-inserting-elements"><span class="secno">8.2.5.1 </span>Creating and inserting elements</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4398:
4399: <p>When the steps below require the UA to <dfn id="create-an-element-for-the-token" title="create an
4400: element for the token">create an element for a token</dfn> in a
4401: particular namespace, the UA must create a node implementing the
4402: interface appropriate for the element type corresponding to the tag
4403: name of the token in the given namespace (as given in the
4404: specification that defines that element, e.g. for an <code><a href="text-level-semantics.html#the-a-element">a</a></code>
1.724 mike 4405: element in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>, this specification
1.1 mike 4406: defines it to be the <code><a href="text-level-semantics.html#htmlanchorelement">HTMLAnchorElement</a></code> interface), with
4407: the tag name being the name of that element, with the node being in
4408: the given namespace, and with the attributes on the node being those
4409: given in the given token.</p>
4410:
1.724 mike 4411: <p>The interface appropriate for an element in the <a href="infrastructure.html#html-namespace-0">HTML
1.426 mike 4412: namespace</a> that is not defined in this specification (or
4413: <a href="infrastructure.html#other-applicable-specifications">other applicable specifications</a>) is
1.44 mike 4414: <code><a href="dom.html#htmlunknownelement">HTMLUnknownElement</a></code>. Element in other namespaces whose
1.1 mike 4415: interface is not defined by that namespace's specification must use
1.810 mike 4416: the interface <code><a href="infrastructure.html#element">Element</a></code>.</p>
1.1 mike 4417:
1.882 mike 4418: <p>When a <a href="forms.html#category-reset" title="category-reset">resettable element</a> is
1.1 mike 4419: created in this manner, its <a href="forms.html#concept-form-reset-control" title="concept-form-reset-control">reset algorithm</a> must be
4420: invoked once the attributes are set. (This initializes the element's
4421: <a href="forms.html#concept-fe-value" title="concept-fe-value">value</a> and <a href="forms.html#concept-fe-checked" title="concept-fe-checked">checkedness</a> based on the element's
4422: attributes.)</p>
4423:
4424: <hr><p>When the steps below require the UA to <dfn id="insert-an-html-element">insert an HTML
4425: element</dfn> for a token, the UA must first <a href="#create-an-element-for-the-token">create an element
1.724 mike 4426: for the token</a> in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>, and then
1.1 mike 4427: append this node to the <a href="#current-node">current node</a>, and push it onto
4428: the <a href="#stack-of-open-elements">stack of open elements</a> so that it is the new
4429: <a href="#current-node">current node</a>.</p>
4430:
4431: <p>The steps below may also require that the UA insert an HTML
4432: element in a particular place, in which case the UA must follow the
4433: same steps except that it must insert or append the new node in the
4434: location specified instead of appending it to the <a href="#current-node">current
4435: node</a>. (This happens in particular during the parsing of
4436: tables with invalid content.)</p>
4437:
4438: <p>If an element created by the <a href="#insert-an-html-element">insert an HTML element</a>
4439: algorithm is a <a href="forms.html#form-associated-element">form-associated element</a>, and the
4440: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> is not null,
4441: and the newly created element doesn't have a <code title="attr-fae-form"><a href="forms.html#attr-fae-form">form</a></code> attribute, the user agent must
4442: <a href="forms.html#concept-form-association" title="concept-form-association">associate</a> the newly
4443: created element with the <code><a href="forms.html#the-form-element">form</a></code> element pointed to by the
4444: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> before
4445: inserting it wherever it is to be inserted.</p>
4446:
4447: <hr><p>When the steps below require the UA to <dfn id="insert-a-foreign-element">insert a foreign
4448: element</dfn> for a token, the UA must first <a href="#create-an-element-for-the-token">create an element
4449: for the token</a> in the given namespace, and then append this
4450: node to the <a href="#current-node">current node</a>, and push it onto the
4451: <a href="#stack-of-open-elements">stack of open elements</a> so that it is the new
1.724 mike 4452: <a href="#current-node">current node</a>. If the newly created element has an <code title="">xmlns</code> attribute in the <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a>
1.1 mike 4453: whose value is not exactly the same as the element's namespace, that
4454: is a <a href="#parse-error">parse error</a>. Similarly, if the newly created
4455: element has an <code title="">xmlns:xlink</code> attribute in the
1.724 mike 4456: <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a> whose value is not the <a href="infrastructure.html#xlink-namespace">XLink
1.1 mike 4457: Namespace</a>, that is a <a href="#parse-error">parse error</a>.</p>
4458:
4459: <p>When the steps below require the user agent to <dfn id="adjust-mathml-attributes">adjust MathML
4460: attributes</dfn> for a token, then, if the token has an attribute
4461: named <code title="">definitionurl</code>, change its name to <code title="">definitionURL</code> (note the case difference).</p>
4462:
4463: <p>When the steps below require the user agent to <dfn id="adjust-svg-attributes">adjust SVG
4464: attributes</dfn> for a token, then, for each attribute on the token
4465: whose attribute name is one of the ones in the first column of the
4466: following table, change the attribute's name to the name given in
4467: the corresponding cell in the second column. (This fixes the case of
4468: SVG attributes that are not all lowercase.)</p>
4469:
4470: <table><thead><tr><th> Attribute name on token </th><th> Attribute name on element
4471: </th></tr></thead><tbody><tr><td> <code title="">attributename</code> </td><td> <code title="">attributeName</code>
4472: </td></tr><tr><td> <code title="">attributetype</code> </td><td> <code title="">attributeType</code>
4473: </td></tr><tr><td> <code title="">basefrequency</code> </td><td> <code title="">baseFrequency</code>
4474: </td></tr><tr><td> <code title="">baseprofile</code> </td><td> <code title="">baseProfile</code>
4475: </td></tr><tr><td> <code title="">calcmode</code> </td><td> <code title="">calcMode</code>
4476: </td></tr><tr><td> <code title="">clippathunits</code> </td><td> <code title="">clipPathUnits</code>
4477: </td></tr><tr><td> <code title="">contentscripttype</code> </td><td> <code title="">contentScriptType</code>
4478: </td></tr><tr><td> <code title="">contentstyletype</code> </td><td> <code title="">contentStyleType</code>
4479: </td></tr><tr><td> <code title="">diffuseconstant</code> </td><td> <code title="">diffuseConstant</code>
4480: </td></tr><tr><td> <code title="">edgemode</code> </td><td> <code title="">edgeMode</code>
4481: </td></tr><tr><td> <code title="">externalresourcesrequired</code> </td><td> <code title="">externalResourcesRequired</code>
4482: </td></tr><tr><td> <code title="">filterres</code> </td><td> <code title="">filterRes</code>
4483: </td></tr><tr><td> <code title="">filterunits</code> </td><td> <code title="">filterUnits</code>
4484: </td></tr><tr><td> <code title="">glyphref</code> </td><td> <code title="">glyphRef</code>
4485: </td></tr><tr><td> <code title="">gradienttransform</code> </td><td> <code title="">gradientTransform</code>
4486: </td></tr><tr><td> <code title="">gradientunits</code> </td><td> <code title="">gradientUnits</code>
4487: </td></tr><tr><td> <code title="">kernelmatrix</code> </td><td> <code title="">kernelMatrix</code>
4488: </td></tr><tr><td> <code title="">kernelunitlength</code> </td><td> <code title="">kernelUnitLength</code>
4489: </td></tr><tr><td> <code title="">keypoints</code> </td><td> <code title="">keyPoints</code>
4490: </td></tr><tr><td> <code title="">keysplines</code> </td><td> <code title="">keySplines</code>
4491: </td></tr><tr><td> <code title="">keytimes</code> </td><td> <code title="">keyTimes</code>
4492: </td></tr><tr><td> <code title="">lengthadjust</code> </td><td> <code title="">lengthAdjust</code>
4493: </td></tr><tr><td> <code title="">limitingconeangle</code> </td><td> <code title="">limitingConeAngle</code>
4494: </td></tr><tr><td> <code title="">markerheight</code> </td><td> <code title="">markerHeight</code>
4495: </td></tr><tr><td> <code title="">markerunits</code> </td><td> <code title="">markerUnits</code>
4496: </td></tr><tr><td> <code title="">markerwidth</code> </td><td> <code title="">markerWidth</code>
4497: </td></tr><tr><td> <code title="">maskcontentunits</code> </td><td> <code title="">maskContentUnits</code>
4498: </td></tr><tr><td> <code title="">maskunits</code> </td><td> <code title="">maskUnits</code>
4499: </td></tr><tr><td> <code title="">numoctaves</code> </td><td> <code title="">numOctaves</code>
4500: </td></tr><tr><td> <code title="">pathlength</code> </td><td> <code title="">pathLength</code>
4501: </td></tr><tr><td> <code title="">patterncontentunits</code> </td><td> <code title="">patternContentUnits</code>
4502: </td></tr><tr><td> <code title="">patterntransform</code> </td><td> <code title="">patternTransform</code>
4503: </td></tr><tr><td> <code title="">patternunits</code> </td><td> <code title="">patternUnits</code>
4504: </td></tr><tr><td> <code title="">pointsatx</code> </td><td> <code title="">pointsAtX</code>
4505: </td></tr><tr><td> <code title="">pointsaty</code> </td><td> <code title="">pointsAtY</code>
4506: </td></tr><tr><td> <code title="">pointsatz</code> </td><td> <code title="">pointsAtZ</code>
4507: </td></tr><tr><td> <code title="">preservealpha</code> </td><td> <code title="">preserveAlpha</code>
4508: </td></tr><tr><td> <code title="">preserveaspectratio</code> </td><td> <code title="">preserveAspectRatio</code>
4509: </td></tr><tr><td> <code title="">primitiveunits</code> </td><td> <code title="">primitiveUnits</code>
4510: </td></tr><tr><td> <code title="">refx</code> </td><td> <code title="">refX</code>
4511: </td></tr><tr><td> <code title="">refy</code> </td><td> <code title="">refY</code>
4512: </td></tr><tr><td> <code title="">repeatcount</code> </td><td> <code title="">repeatCount</code>
4513: </td></tr><tr><td> <code title="">repeatdur</code> </td><td> <code title="">repeatDur</code>
4514: </td></tr><tr><td> <code title="">requiredextensions</code> </td><td> <code title="">requiredExtensions</code>
4515: </td></tr><tr><td> <code title="">requiredfeatures</code> </td><td> <code title="">requiredFeatures</code>
4516: </td></tr><tr><td> <code title="">specularconstant</code> </td><td> <code title="">specularConstant</code>
4517: </td></tr><tr><td> <code title="">specularexponent</code> </td><td> <code title="">specularExponent</code>
4518: </td></tr><tr><td> <code title="">spreadmethod</code> </td><td> <code title="">spreadMethod</code>
4519: </td></tr><tr><td> <code title="">startoffset</code> </td><td> <code title="">startOffset</code>
4520: </td></tr><tr><td> <code title="">stddeviation</code> </td><td> <code title="">stdDeviation</code>
4521: </td></tr><tr><td> <code title="">stitchtiles</code> </td><td> <code title="">stitchTiles</code>
4522: </td></tr><tr><td> <code title="">surfacescale</code> </td><td> <code title="">surfaceScale</code>
4523: </td></tr><tr><td> <code title="">systemlanguage</code> </td><td> <code title="">systemLanguage</code>
4524: </td></tr><tr><td> <code title="">tablevalues</code> </td><td> <code title="">tableValues</code>
4525: </td></tr><tr><td> <code title="">targetx</code> </td><td> <code title="">targetX</code>
4526: </td></tr><tr><td> <code title="">targety</code> </td><td> <code title="">targetY</code>
4527: </td></tr><tr><td> <code title="">textlength</code> </td><td> <code title="">textLength</code>
4528: </td></tr><tr><td> <code title="">viewbox</code> </td><td> <code title="">viewBox</code>
4529: </td></tr><tr><td> <code title="">viewtarget</code> </td><td> <code title="">viewTarget</code>
4530: </td></tr><tr><td> <code title="">xchannelselector</code> </td><td> <code title="">xChannelSelector</code>
4531: </td></tr><tr><td> <code title="">ychannelselector</code> </td><td> <code title="">yChannelSelector</code>
4532: </td></tr><tr><td> <code title="">zoomandpan</code> </td><td> <code title="">zoomAndPan</code>
4533: </td></tr></tbody></table><p>When the steps below require the user agent to <dfn id="adjust-foreign-attributes">adjust
4534: foreign attributes</dfn> for a token, then, if any of the attributes
4535: on the token match the strings given in the first column of the
4536: following table, let the attribute be a namespaced attribute, with
4537: the prefix being the string given in the corresponding cell in the
4538: second column, the local name being the string given in the
4539: corresponding cell in the third column, and the namespace being the
4540: namespace given in the corresponding cell in the fourth
4541: column. (This fixes the use of namespaced attributes, in particular
4542: <a href="dom.html#attr-xml-lang" title="attr-xml-lang"><code title="">lang</code> attributes in
4543: the <span>XML namespace</span></a>.)</p>
4544:
4545: <table><thead><tr><th> Attribute name </th><th> Prefix </th><th> Local name </th><th> Namespace
1.724 mike 4546: </th></tr></thead><tbody><tr><td> <code title="">xlink:actuate</code> </td><td> <code title="">xlink</code> </td><td> <code title="">actuate</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a>
4547: </td></tr><tr><td> <code title="">xlink:arcrole</code> </td><td> <code title="">xlink</code> </td><td> <code title="">arcrole</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a>
4548: </td></tr><tr><td> <code title="">xlink:href</code> </td><td> <code title="">xlink</code> </td><td> <code title="">href</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a>
4549: </td></tr><tr><td> <code title="">xlink:role</code> </td><td> <code title="">xlink</code> </td><td> <code title="">role</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a>
4550: </td></tr><tr><td> <code title="">xlink:show</code> </td><td> <code title="">xlink</code> </td><td> <code title="">show</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a>
4551: </td></tr><tr><td> <code title="">xlink:title</code> </td><td> <code title="">xlink</code> </td><td> <code title="">title</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a>
4552: </td></tr><tr><td> <code title="">xlink:type</code> </td><td> <code title="">xlink</code> </td><td> <code title="">type</code> </td><td> <a href="infrastructure.html#xlink-namespace">XLink namespace</a>
4553: </td></tr><tr><td> <code title="">xml:base</code> </td><td> <code title="">xml</code> </td><td> <code title="">base</code> </td><td> <a href="infrastructure.html#xml-namespace">XML namespace</a> <!-- attr-xml-base -->
4554: </td></tr><tr><td> <code title="">xml:lang</code> </td><td> <code title="">xml</code> </td><td> <code title="">lang</code> </td><td> <a href="infrastructure.html#xml-namespace">XML namespace</a>
4555: </td></tr><tr><td> <code title="">xml:space</code> </td><td> <code title="">xml</code> </td><td> <code title="">space</code> </td><td> <a href="infrastructure.html#xml-namespace">XML namespace</a>
4556: </td></tr><tr><td> <code title="">xmlns</code> </td><td> (none) </td><td> <code title="">xmlns</code> </td><td> <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a>
4557: </td></tr><tr><td> <code title="">xmlns:xlink</code> </td><td> <code title="">xmlns</code> </td><td> <code title="">xlink</code> </td><td> <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a>
1.91 mike 4558: </td></tr></tbody></table><hr><p>The <dfn id="generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</dfn> and the
1.1 mike 4559: <dfn id="generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</dfn> consist of the
4560: following steps. These algorithms are always invoked in response to
4561: a start tag token.</p>
4562:
4563: <ol><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p></li>
4564:
1.91 mike 4565: <li><p>If the algorithm that was invoked is the <a href="#generic-raw-text-element-parsing-algorithm">generic raw
1.541 mike 4566: text element parsing algorithm</a>, switch the tokenizer to the
4567: <a href="#rawtext-state">RAWTEXT state</a>; otherwise the algorithm invoked
4568: was the <a href="#generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</a>,
4569: switch the tokenizer to the <a href="#rcdata-state">RCDATA state</a>.</p></li>
1.1 mike 4570:
4571: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
4572: <a href="#insertion-mode">insertion mode</a>.</p>
4573:
1.540 mike 4574: </li><li><p>Then, switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incdata" title="insertion mode: text">text</a>".</p></li>
1.1 mike 4575:
1.755 mike 4576: </ol><h5 id="closing-elements-that-have-implied-end-tags"><span class="secno">8.2.5.2 </span>Closing elements that have implied end tags</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4577:
4578: <p>When the steps below require the UA to <dfn id="generate-implied-end-tags">generate implied end
4579: tags</dfn>, then, while the <a href="#current-node">current node</a> is a
1.422 mike 4580: <code><a href="semantics.html#the-dd-element">dd</a></code> element, a <code><a href="semantics.html#the-dt-element">dt</a></code> element, an
1.1 mike 4581: <code><a href="semantics.html#the-li-element">li</a></code> element, an <code><a href="forms.html#the-option-element">option</a></code> element, an
4582: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, a <code><a href="semantics.html#the-p-element">p</a></code> element, an
4583: <code><a href="text-level-semantics.html#the-rp-element">rp</a></code> element, or an <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> element, the UA must
4584: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
4585: elements</a>.</p>
4586:
4587: <p>If a step requires the UA to generate implied end tags but lists
4588: an element to exclude from the process, then the UA must perform the
4589: above steps as if that element was not in the above list.</p>
4590:
4591:
1.755 mike 4592: <h5 id="foster-parenting"><span class="secno">8.2.5.3 </span>Foster parenting</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4593:
4594: <p>Foster parenting happens when content is misnested in tables.</p>
4595:
4596: <p>When a node <var title="">node</var> is to be <dfn id="foster-parent" title="foster
4597: parent">foster parented</dfn>, the node <var title="">node</var>
4598: must be inserted into the <i><a href="#foster-parent-element">foster parent element</a></i>.</p>
4599:
4600: <p>The <dfn id="foster-parent-element">foster parent element</dfn> is the parent element of the
4601: last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the <a href="#stack-of-open-elements">stack of open
4602: elements</a>, if there is a <code><a href="tabular-data.html#the-table-element">table</a></code> element and it has
4603: such a parent element. If there is no <code><a href="tabular-data.html#the-table-element">table</a></code> element in
4604: the <a href="#stack-of-open-elements">stack of open elements</a> (<a href="#fragment-case">fragment
4605: case</a>), then the <i><a href="#foster-parent-element">foster parent element</a></i> is the first
4606: element in the <a href="#stack-of-open-elements">stack of open elements</a> (the
1.159 mike 4607: <code><a href="semantics.html#the-html-element-0">html</a></code> element). Otherwise, if there is a
1.1 mike 4608: <code><a href="tabular-data.html#the-table-element">table</a></code> element in the <a href="#stack-of-open-elements">stack of open
4609: elements</a>, but the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the
4610: <a href="#stack-of-open-elements">stack of open elements</a> has no parent, or its parent
4611: node is not an element, then the <i><a href="#foster-parent-element">foster parent element</a></i> is
4612: the element before the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the
4613: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
4614:
4615: <p>If the <i><a href="#foster-parent-element">foster parent element</a></i> is the parent element of the
4616: last <code><a href="tabular-data.html#the-table-element">table</a></code> element in the <a href="#stack-of-open-elements">stack of open
4617: elements</a>, then <var title="">node</var> must be inserted
4618: immediately <em>before</em> the last <code><a href="tabular-data.html#the-table-element">table</a></code> element in
4619: the <a href="#stack-of-open-elements">stack of open elements</a> in the <i><a href="#foster-parent-element">foster parent
4620: element</a></i>; otherwise, <var title="">node</var> must be
4621: <em>appended</em> to the <i><a href="#foster-parent-element">foster parent element</a></i>.</p>
4622:
4623:
4624:
1.755 mike 4625: <h5 id="the-initial-insertion-mode"><span class="secno">8.2.5.4 </span>The "<dfn title="insertion mode: initial">initial</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4626:
4627: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-initial-insertion-mode" title="insertion
4628: mode: initial">initial</a>", tokens must be handled as follows:</p>
4629:
4630: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4631: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
1.882 mike 4632: U+000D CARRIAGE RETURN (CR), or U+0020 SPACE</dt>
1.1 mike 4633: <dd>
4634: <p>Ignore the token.</p>
4635: </dd>
4636:
4637: <dt>A comment token</dt>
4638: <dd>
1.882 mike 4639: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the <code><a href="infrastructure.html#document">Document</a></code>
1.1 mike 4640: object with the <code title="">data</code> attribute set to the
4641: data given in the comment token.</p>
4642: </dd>
4643:
4644: <dt>A DOCTYPE token</dt>
4645: <dd>
4646:
4647: <p>If the DOCTYPE token's name is not a
4648: <a href="infrastructure.html#case-sensitive">case-sensitive</a> match for the string "<code title="">html</code>", or the token's public identifier is not
4649: missing, or the token's system identifier is neither missing nor a
4650: <a href="infrastructure.html#case-sensitive">case-sensitive</a> match for the string
1.465 mike 4651: "<code><a href="infrastructure.html#about:legacy-compat">about:legacy-compat</a></code>", and none of the sets of
1.1 mike 4652: conditions in the following list are matched, then there is a
1.861 mike 4653: <a href="#parse-error">parse error</a>.</p>
1.1 mike 4654:
4655: <ul><!-- only things that trigger no-quirks mode and were valid in
1.688 mike 4656: some other spec are allowed in this list --><li>The DOCTYPE token's name is a <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4657: match for the string "<code title="">html</code>", the token's
4658: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4659: "<code title="">-//W3C//DTD HTML 4.0//EN</code>", and
4660: the token's system identifier is either missing or the
1.1 mike 4661: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/REC-html40/strict.dtd</code>".</li>
4662:
1.688 mike 4663: <li>The DOCTYPE token's name is a <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4664: match for the string "<code title="">html</code>", the token's
4665: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4666: "<code title="">-//W3C//DTD HTML 4.01//EN</code>", and
4667: the token's system identifier is either missing or the
1.1 mike 4668: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/html4/strict.dtd</code>".</li>
4669:
1.688 mike 4670: <li>The DOCTYPE token's name is a <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4671: match for the string "<code title="">html</code>", the token's
4672: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4673: "<code title="">-//W3C//DTD XHTML 1.0 Strict//EN</code>",
1.1 mike 4674: and the token's system identifier is the
4675: <a href="infrastructure.html#case-sensitive">case-sensitive</a> string "<code title="">http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd</code>".</li>
4676:
1.688 mike 4677: <li>The DOCTYPE token's name is a <a href="infrastructure.html#case-sensitive">case-sensitive</a>
4678: match for the string "<code title="">html</code>", the token's
4679: public identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a> string
4680: "<code title="">-//W3C//DTD XHTML 1.1//EN</code>", and
4681: the token's system identifier is the <a href="infrastructure.html#case-sensitive">case-sensitive</a>
1.1 mike 4682: string "<code title="">http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd</code>".</li>
4683:
4684: </ul><p>Conformance checkers may, based on the values (including
4685: presence or lack thereof) of the DOCTYPE token's name, public
4686: identifier, or system identifier, switch to a conformance checking
4687: mode for another language (e.g. based on the DOCTYPE token a
4688: conformance checker could recognize that the document is an
1.183 mike 4689: HTML4-era document, and defer to an HTML4 conformance
1.1 mike 4690: checker.)</p>
4691:
1.882 mike 4692: <p>Append a <code><a href="infrastructure.html#documenttype">DocumentType</a></code> node to the
1.810 mike 4693: <code><a href="infrastructure.html#document">Document</a></code> node, with the <code title="">name</code>
1.1 mike 4694: attribute set to the name given in the DOCTYPE token, or the empty
4695: string if the name was missing; the <code title="">publicId</code>
4696: attribute set to the public identifier given in the DOCTYPE token,
4697: or the empty string if the public identifier was missing; the
4698: <code title="">systemId</code> attribute set to the system
4699: identifier given in the DOCTYPE token, or the empty string if the
4700: system identifier was missing; and the other attributes specific
1.882 mike 4701: to <code><a href="infrastructure.html#documenttype">DocumentType</a></code> objects set to null and empty lists
4702: as appropriate. Associate the <code><a href="infrastructure.html#documenttype">DocumentType</a></code> node with
1.810 mike 4703: the <code><a href="infrastructure.html#document">Document</a></code> object so that it is returned as the
1.1 mike 4704: value of the <code title="">doctype</code> attribute of the
1.810 mike 4705: <code><a href="infrastructure.html#document">Document</a></code> object.</p>
1.1 mike 4706:
4707: <p id="quirks-mode-doctypes">Then, if the DOCTYPE token matches
4708: one of the conditions in the following list, then set the
1.810 mike 4709: <code><a href="infrastructure.html#document">Document</a></code> to <a href="dom.html#quirks-mode">quirks mode</a>:</p>
1.1 mike 4710:
4711: <ul class="brief"><li> The <i>force-quirks flag</i> is set to <i>on</i>. </li>
1.688 mike 4712: <li> The name is set to anything other than "<code title="">html</code>" (compared <a href="infrastructure.html#case-sensitive" title="case-sensitive">case-sensitively</a>). </li>
1.1 mike 4713: <li> The public identifier starts with: "<code title="">+//Silmaril//dtd html Pro v0r11 19970101//<!--EN--></code>" </li>
4714: <li> The public identifier starts with: "<code title="">-//AdvaSoft Ltd//DTD HTML 3.0 asWedit + extensions//<!--EN--></code>" </li>
4715: <li> The public identifier starts with: "<code title="">-//AS//DTD HTML 3.0 asWedit + extensions//<!--EN--></code>" </li>
4716: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Level 1//<!--EN--></code>" </li>
4717: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Level 2//<!--EN--></code>" </li>
4718: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict Level 1//<!--EN--></code>" </li>
4719: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict Level 2//<!--EN--></code>" </li>
4720: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0 Strict//<!--EN--></code>" </li>
4721: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.0//<!--EN--></code>" </li>
4722: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 2.1E//<!--EN--></code>" </li>
4723: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.0//<!--EN--></code>" </li>
4724: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML 3.0//EN//</code>" </li>-->
4725: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.2 Final//<!--EN--></code>" </li>
4726: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3.2//<!--EN--></code>" </li>
4727: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML 3//<!--EN--></code>" </li>
4728: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 0//<!--EN--></code>" </li>
4729: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 0//EN//2.0</code>" </li>-->
4730: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 1//<!--EN--></code>" </li>
4731: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 1//EN//2.0</code>" </li>-->
4732: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 2//<!--EN--></code>" </li>
4733: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 2//EN//2.0</code>" </li>-->
4734: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Level 3//<!--EN--></code>" </li>
4735: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Level 3//EN//3.0</code>" </li>-->
4736: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 0//<!--EN--></code>" </li>
4737: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 0//EN//2.0</code>" </li>-->
4738: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 1//<!--EN--></code>" </li>
4739: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 1//EN//2.0</code>" </li>-->
4740: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 2//<!--EN--></code>" </li>
4741: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 2//EN//2.0</code>" </li>-->
4742: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict Level 3//<!--EN--></code>" </li>
4743: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict Level 3//EN//3.0</code>" </li>-->
4744: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML Strict//<!--EN--></code>" </li>
4745: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict//EN//2.0</code>" </li>-->
4746: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML Strict//EN//3.0</code>" </li>-->
4747: <li> The public identifier starts with: "<code title="">-//IETF//DTD HTML//<!--EN--></code>" </li>
4748: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML//EN//2.0</code>" </li>-->
4749: <!--<li> The public identifier is set to: "<code title="">-//IETF//DTD HTML//EN//3.0</code>" </li>-->
4750: <li> The public identifier starts with: "<code title="">-//Metrius//DTD Metrius Presentational//<!--EN--></code>" </li>
4751: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 HTML Strict//<!--EN--></code>" </li>
4752: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 HTML//<!--EN--></code>" </li>
4753: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 2.0 Tables//<!--EN--></code>" </li>
4754: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 HTML Strict//<!--EN--></code>" </li>
4755: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 HTML//<!--EN--></code>" </li>
4756: <li> The public identifier starts with: "<code title="">-//Microsoft//DTD Internet Explorer 3.0 Tables//<!--EN--></code>" </li>
4757: <li> The public identifier starts with: "<code title="">-//Netscape Comm. Corp.//DTD HTML//<!--EN--></code>" </li>
4758: <li> The public identifier starts with: "<code title="">-//Netscape Comm. Corp.//DTD Strict HTML//<!--EN--></code>" </li>
4759: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML 2.0//<!--EN--></code>" </li>
4760: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML Extended 1.0//<!--EN--></code>" </li>
4761: <li> The public identifier starts with: "<code title="">-//O'Reilly and Associates//DTD HTML Extended Relaxed 1.0//<!--EN--></code>" </li>
4762: <li> The public identifier starts with: "<code title="">-//SoftQuad Software//DTD HoTMetaL PRO 6.0::19990601::extensions to HTML 4.0//<!--EN--></code>" </li>
4763: <li> The public identifier starts with: "<code title="">-//SoftQuad//DTD HoTMetaL PRO 4.0::19971010::extensions to HTML 4.0//<!--EN--></code>" </li>
4764: <li> The public identifier starts with: "<code title="">-//Spyglass//DTD HTML 2.0 Extended//<!--EN--></code>" </li>
4765: <li> The public identifier starts with: "<code title="">-//SQ//DTD HTML 2.0 HoTMetaL + extensions//<!--EN--></code>" </li>
4766: <li> The public identifier starts with: "<code title="">-//Sun Microsystems Corp.//DTD HotJava HTML//<!--EN--></code>" </li>
4767: <li> The public identifier starts with: "<code title="">-//Sun Microsystems Corp.//DTD HotJava Strict HTML//<!--EN--></code>" </li>
4768: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3 1995-03-24//<!--EN--></code>" </li>
4769: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2 Draft//<!--EN--></code>" </li>
4770: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2 Final//<!--EN--></code>" </li>
4771: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2//<!--EN--></code>" </li>
4772: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 3.2S Draft//<!--EN--></code>" </li>
4773: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 4.0 Frameset//<!--EN--></code>" </li>
4774: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML 4.0 Transitional//<!--EN--></code>" </li>
4775: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML Experimental 19960712//<!--EN--></code>" </li>
4776: <li> The public identifier starts with: "<code title="">-//W3C//DTD HTML Experimental 970421//<!--EN--></code>" </li>
4777: <li> The public identifier starts with: "<code title="">-//W3C//DTD W3 HTML//<!--EN--></code>" </li>
4778: <li> The public identifier starts with: "<code title="">-//W3O//DTD W3 HTML 3.0//<!--EN--></code>" </li>
4779: <!--<li> The public identifier is set to: "<code title="">-//W3O//DTD W3 HTML 3.0//EN//</code>" </li>-->
4780: <li> The public identifier is set to: "<code title="">-//W3O//DTD W3 HTML Strict 3.0//EN//</code>" </li>
4781: <li> The public identifier starts with: "<code title="">-//WebTechs//DTD Mozilla HTML 2.0//<!--EN--></code>" </li>
4782: <li> The public identifier starts with: "<code title="">-//WebTechs//DTD Mozilla HTML//<!--EN--></code>" </li>
4783: <li> The public identifier is set to: "<code title="">-/W3C/DTD HTML 4.0 Transitional/EN</code>" </li>
4784: <li> The public identifier is set to: "<code title="">HTML</code>" </li>
4785: <li> The system identifier is set to: "<code title="">http://www.ibm.com/data/dtd/v11/ibmxhtml1-transitional.dtd</code>" </li>
4786: <li> The system identifier is missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Frameset//<!--EN--></code>" </li>
4787: <li> The system identifier is missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Transitional//<!--EN--></code>" </li>
4788: </ul><p>Otherwise, if the DOCTYPE token matches one of the conditions
1.810 mike 4789: in the following list, then set the <code><a href="infrastructure.html#document">Document</a></code> to
1.880 mike 4790: <a href="dom.html#limited-quirks-mode">limited-quirks mode</a>:</p>
1.1 mike 4791:
4792: <ul class="brief"><li> The public identifier starts with: "<code title="">-//W3C//DTD XHTML 1.0 Frameset//<!--EN--></code>" </li>
4793: <li> The public identifier starts with: "<code title="">-//W3C//DTD XHTML 1.0 Transitional//<!--EN--></code>" </li>
4794: <li> The system identifier is not missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Frameset//<!--EN--></code>" </li>
4795: <li> The system identifier is not missing and the public identifier starts with: "<code title="">-//W3C//DTD HTML 4.01 Transitional//<!--EN--></code>" </li>
1.688 mike 4796: </ul><p>The system identifier and public identifier strings must be
4797: compared to the values given in the lists above in an <a href="infrastructure.html#ascii-case-insensitive">ASCII
4798: case-insensitive</a> manner. A system identifier whose value is
4799: the empty string is not considered missing for the purposes of the
4800: conditions above.</p>
1.1 mike 4801:
4802: <p>Then, switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before html</a>".</p>
4803:
4804: </dd>
4805:
4806: <dt>Anything else</dt>
4807: <dd>
4808:
1.727 mike 4809: <p>If the document is <em>not</em> <a href="text-level-semantics.html#an-iframe-srcdoc-document">an <code>iframe</code>
4810: <code title="attr-iframe-srcdoc">srcdoc</code> document</a>,
4811: then this is a <a href="#parse-error">parse error</a>; set the
1.810 mike 4812: <code><a href="infrastructure.html#document">Document</a></code> to <a href="dom.html#quirks-mode">quirks mode</a>.</p>
1.1 mike 4813:
1.727 mike 4814: <p>In any case, switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#the-before-html-insertion-mode" title="insertion mode: before html">before html</a>", then
1.1 mike 4815: reprocess the current token.</p>
4816:
4817: </dd>
4818:
1.755 mike 4819: </dl><h5 id="the-before-html-insertion-mode"><span class="secno">8.2.5.5 </span>The "<dfn title="insertion mode: before html">before html</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4820:
4821: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-before-html-insertion-mode" title="insertion
4822: mode: before html">before html</a>", tokens must be handled as follows:</p>
4823:
4824: <dl class="switch"><dt>A DOCTYPE token</dt>
4825: <dd>
4826: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4827: </dd>
4828:
4829: <dt>A comment token</dt>
4830: <dd>
1.882 mike 4831: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the <code><a href="infrastructure.html#document">Document</a></code>
1.1 mike 4832: object with the <code title="">data</code> attribute set to the
4833: data given in the comment token.</p>
4834: </dd>
4835:
4836: <dt>A character token that is one of U+0009 CHARACTER
4837: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
1.882 mike 4838: U+000D CARRIAGE RETURN (CR), or U+0020 SPACE</dt>
1.1 mike 4839: <dd>
4840: <p>Ignore the token.</p>
4841: </dd>
4842:
4843: <dt>A start tag whose tag name is "html"</dt>
4844: <dd>
4845:
1.724 mike 4846: <p><a href="#create-an-element-for-the-token">Create an element for the token</a> in the <a href="infrastructure.html#html-namespace-0">HTML
1.810 mike 4847: namespace</a>. Append it to the <code><a href="infrastructure.html#document">Document</a></code>
1.1 mike 4848: object. Put this element in the <a href="#stack-of-open-elements">stack of open
4849: elements</a>.</p>
4850:
1.810 mike 4851: <p id="parser-appcache">If the <code><a href="infrastructure.html#document">Document</a></code> is being
1.1 mike 4852: loaded as part of <a href="history.html#navigate" title="navigate">navigation</a> of a
4853: <a href="browsers.html#browsing-context">browsing context</a>, then: if the newly created element
1.875 mike 4854: has a <code title="attr-html-manifest"><a href="semantics.html#attr-html-manifest">manifest</a></code> attribute
4855: whose value is not the empty string, then <a href="infrastructure.html#resolve-a-url" title="resolve a
4856: url">resolve</a> the value of that attribute to an
4857: <a href="infrastructure.html#absolute-url">absolute URL</a>, relative to the newly created element,
4858: and if that is successful, run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application cache selection
1.29 mike 4859: algorithm</a> with the resulting <a href="infrastructure.html#absolute-url">absolute URL</a> with
4860: any <a href="infrastructure.html#url-fragment" title="url-fragment"><fragment></a> component
1.875 mike 4861: removed; otherwise, if there is no such attribute, or its value is
4862: the empty string, or resolving its value fails, run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application cache selection
4863: algorithm</a> with no manifest. The algorithm must be passed
4864: the <code><a href="infrastructure.html#document">Document</a></code> object.</p>
1.1 mike 4865:
4866: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before head</a>".</p>
4867:
4868: </dd>
4869:
1.334 mike 4870: <dt>An end tag whose tag name is one of: "head", "body", "html", "br"</dt>
4871: <dd>
4872: <p>Act as described in the "anything else" entry below.</p>
4873: </dd>
4874:
4875: <dt>Any other end tag</dt>
4876: <dd>
4877: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4878: </dd>
4879:
1.1 mike 4880: <dt>Anything else</dt>
4881: <dd>
4882:
1.159 mike 4883: <p>Create an <code><a href="semantics.html#the-html-element-0">html</a></code> element. Append it to the
1.810 mike 4884: <code><a href="infrastructure.html#document">Document</a></code> object. Put this element in the <a href="#stack-of-open-elements">stack
1.1 mike 4885: of open elements</a>.</p>
4886:
1.810 mike 4887: <p>If the <code><a href="infrastructure.html#document">Document</a></code> is being loaded as part of <a href="history.html#navigate" title="navigate">navigation</a> of a <a href="browsers.html#browsing-context">browsing
1.1 mike 4888: context</a>, then: run the <a href="offline.html#concept-appcache-init" title="concept-appcache-init">application cache selection
4889: algorithm</a> with no manifest, passing it the
1.810 mike 4890: <code><a href="infrastructure.html#document">Document</a></code> object.</p>
1.1 mike 4891:
4892: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#the-before-head-insertion-mode" title="insertion mode: before head">before head</a>", then
4893: reprocess the current token.</p>
4894:
4895: </dd>
4896:
4897: </dl><p>The root element can end up being removed from the
1.810 mike 4898: <code><a href="infrastructure.html#document">Document</a></code> object, e.g. by scripts; nothing in particular
1.1 mike 4899: happens in such cases, content continues being appended to the nodes
4900: as described in the next section.</p>
4901:
4902:
1.755 mike 4903: <h5 id="the-before-head-insertion-mode"><span class="secno">8.2.5.6 </span>The "<dfn title="insertion mode: before head">before head</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4904:
4905: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-before-head-insertion-mode" title="insertion
4906: mode: before head">before head</a>", tokens must be handled as follows:</p>
4907:
4908: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4909: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
1.882 mike 4910: U+000D CARRIAGE RETURN (CR), or U+0020 SPACE</dt>
1.1 mike 4911: <dd>
4912: <p>Ignore the token.</p> <!-- :-( -->
4913: </dd>
4914:
4915: <dt>A comment token</dt>
4916: <dd>
1.882 mike 4917: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the <a href="#current-node">current
1.1 mike 4918: node</a> with the <code title="">data</code> attribute set to
4919: the data given in the comment token.</p>
4920: </dd>
4921:
4922: <dt>A DOCTYPE token</dt>
4923: <dd>
4924: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4925: </dd>
4926:
4927: <dt>A start tag whose tag name is "html"</dt>
4928: <dd>
4929: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
4930: mode</a>.</p>
4931: </dd>
4932:
4933: <dt>A start tag whose tag name is "head"</dt>
4934: <dd>
4935:
4936: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
4937:
4938: <p>Set the <a href="#head-element-pointer"><code title="">head</code> element pointer</a>
1.159 mike 4939: to the newly created <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 4940:
4941: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>".</p>
4942:
4943: </dd>
4944:
4945: <dt>An end tag whose tag name is one of: "head", "body", "html", "br"</dt>
4946: <dd>
4947:
4948: <p>Act as if a start tag token with the tag name "head" and no
4949: attributes had been seen, then reprocess the current token.</p>
4950:
4951: </dd>
4952:
4953: <dt>Any other end tag</dt>
4954: <dd>
4955:
4956: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4957:
4958: </dd>
4959:
4960: <dt>Anything else</dt>
4961: <dd>
4962:
4963: <p>Act as if a start tag token with the tag name "head" and no
4964: attributes had been seen, then reprocess the current
4965: token.</p>
4966:
4967: </dd>
4968:
1.755 mike 4969: </dl><h5 id="parsing-main-inhead"><span class="secno">8.2.5.7 </span>The "<dfn title="insertion mode: in head">in head</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 4970:
4971: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inhead" title="insertion
4972: mode: in head">in head</a>", tokens must be handled as follows:</p>
4973:
4974: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
4975: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
1.882 mike 4976: U+000D CARRIAGE RETURN (CR), or U+0020 SPACE</dt>
1.1 mike 4977: <dd>
4978: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
4979: the <a href="#current-node">current node</a>.</p>
4980: </dd>
4981:
4982: <dt>A comment token</dt>
4983: <dd>
1.882 mike 4984: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the <a href="#current-node">current
1.1 mike 4985: node</a> with the <code title="">data</code> attribute set to
4986: the data given in the comment token.</p>
4987: </dd>
4988:
4989: <dt>A DOCTYPE token</dt>
4990: <dd>
4991: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
4992: </dd>
4993:
4994: <dt>A start tag whose tag name is "html"</dt>
4995: <dd>
4996: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
4997: mode</a>.</p>
4998: </dd>
4999:
5000: <dt>A start tag whose tag name is one of: "base", "command",
5001: "link"</dt>
5002: <dd>
5003:
5004: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
5005: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
5006: elements</a>.</p>
5007:
5008: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
5009: token's <i>self-closing flag</i></a>, if it is set.</p>
5010:
5011: </dd>
5012:
5013: <dt>A start tag whose tag name is "meta"</dt>
5014: <dd>
5015:
5016: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
5017: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
5018: elements</a>.</p>
5019:
5020: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
5021: token's <i>self-closing flag</i></a>, if it is set.</p>
5022:
5023: <p id="meta-charset-during-parse">If the element has a <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">charset</a></code> attribute, and its
5024: value is a supported encoding, and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
5025: currently <i>tentative</i>, then <a href="#change-the-encoding">change the
5026: encoding</a> to the encoding given by the value of the
5027: <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">charset</a></code> attribute.</p>
5028:
5029: <p>Otherwise, if the element has a <code title="attr-meta-charset"><a href="semantics.html#attr-meta-charset">content</a></code> attribute, and
5030: applying the <a href="infrastructure.html#algorithm-for-extracting-an-encoding-from-a-content-type">algorithm for extracting an encoding from a
5031: Content-Type</a> to its value returns a supported encoding
5032: <var title="">encoding</var>, and the <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
5033: currently <i>tentative</i>, then <a href="#change-the-encoding">change the
5034: encoding</a> to the encoding <var title="">encoding</var>.</p>
5035:
5036: </dd>
5037:
5038: <dt>A start tag whose tag name is "title"</dt>
5039: <dd>
5040: <p>Follow the <a href="#generic-rcdata-element-parsing-algorithm">generic RCDATA element parsing algorithm</a>.</p>
5041: </dd>
5042:
5043: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is enabled</dt>
5044: <dt>A start tag whose tag name is one of: "noframes", "style"</dt>
5045: <dd>
1.91 mike 5046: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 5047: </dd>
5048:
5049: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is disabled</dt>
5050: <dd>
5051:
5052: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5053:
5054: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inheadnoscript" title="insertion mode: in head noscript">in head
5055: noscript</a>".</p>
5056:
5057: </dd>
5058:
5059: <dt id="scriptTag">A start tag whose tag name is "script"</dt>
5060: <dd>
5061:
1.854 mike 5062: <p>Run these steps:</p>
5063:
1.1 mike 5064: <ol><li><p><a href="#create-an-element-for-the-token">Create an element for the token</a> in the
1.724 mike 5065: <a href="infrastructure.html#html-namespace-0">HTML namespace</a>.</p></li>
1.1 mike 5066:
5067: <li>
5068:
5069: <p>Mark the element as being <a href="semantics.html#parser-inserted">"parser-inserted"</a>.</p>
5070:
5071: <p class="note">This ensures that, if the script is external,
1.159 mike 5072: any <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code>
1.1 mike 5073: calls in the script will execute in-line, instead of blowing the
5074: document away, as would happen in most other cases. It also
5075: prevents the script from executing until the end tag is
5076: seen.</p>
5077:
5078: </li>
5079:
5080: <li><p>If the parser was originally created for the <a href="#html-fragment-parsing-algorithm">HTML
5081: fragment parsing algorithm</a>, then mark the
1.484 mike 5082: <code><a href="semantics.html#script">script</a></code> element as <a href="semantics.html#already-started">"already
5083: started"</a>. (<a href="#fragment-case">fragment case</a>)</p></li>
1.1 mike 5084:
5085: <li><p>Append the new element to the <a href="#current-node">current node</a>
5086: and push it onto the <a href="#stack-of-open-elements">stack of open
5087: elements</a>.</p></li>
5088:
1.541 mike 5089: <li><p>Switch the tokenizer to the <a href="#script-data-state">script data
5090: state</a>.</p></li>
1.1 mike 5091:
5092: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
5093: <a href="#insertion-mode">insertion mode</a>.</p>
5094:
1.540 mike 5095: </li><li><p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incdata" title="insertion mode: text">text</a>".</p></li>
1.1 mike 5096:
5097: </ol></dd>
5098:
5099: <dt>An end tag whose tag name is "head"</dt>
5100: <dd>
5101:
5102: <p>Pop the <a href="#current-node">current node</a> (which will be the
1.159 mike 5103: <code><a href="semantics.html#the-head-element-0">head</a></code> element) off the <a href="#stack-of-open-elements">stack of open
1.1 mike 5104: elements</a>.</p>
5105:
5106: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#the-after-head-insertion-mode" title="insertion mode: after head">after head</a>".</p>
5107:
5108: </dd>
5109:
5110: <dt>An end tag whose tag name is one of: "body", "html", "br"</dt>
5111: <dd>
5112: <p>Act as described in the "anything else" entry below.</p>
5113: </dd>
5114:
5115: <dt>A start tag whose tag name is "head"</dt>
5116: <dt>Any other end tag</dt>
5117: <dd>
5118: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5119: </dd>
5120:
5121: <dt>Anything else</dt>
5122: <dd>
5123:
5124: <!-- can't get here with an EOF and a fragment case -->
5125:
5126: <p>Act as if an end tag token with the tag name "head" had
5127: been seen, and reprocess the current token.</p>
5128:
5129: </dd>
5130:
1.755 mike 5131: </dl><h5 id="parsing-main-inheadnoscript"><span class="secno">8.2.5.8 </span>The "<dfn title="insertion mode: in head noscript">in head noscript</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 5132:
5133: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inheadnoscript" title="insertion
5134: mode: in head noscript">in head noscript</a>", tokens must be handled as follows:</p>
5135:
5136: <dl class="switch"><dt>A DOCTYPE token</dt>
5137: <dd>
5138: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5139: </dd>
5140:
5141: <dt>A start tag whose tag name is "html"</dt>
5142: <dd>
5143: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
5144: mode</a>.</p>
5145: </dd>
5146:
5147: <dt>An end tag whose tag name is "noscript"</dt>
5148: <dd>
5149:
5150: <p>Pop the <a href="#current-node">current node</a> (which will be a
5151: <code><a href="semantics.html#the-noscript-element">noscript</a></code> element) from the <a href="#stack-of-open-elements">stack of open
5152: elements</a>; the new <a href="#current-node">current node</a> will be a
1.159 mike 5153: <code><a href="semantics.html#the-head-element-0">head</a></code> element.</p>
1.1 mike 5154:
5155: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>".</p>
5156:
5157: </dd>
5158:
5159: <dt>A character token that is one of U+0009 CHARACTER
5160: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
1.882 mike 5161: U+000D CARRIAGE RETURN (CR), or U+0020 SPACE</dt>
1.1 mike 5162: <dt>A comment token</dt>
5163: <dt>A start tag whose tag name is one of: "link", "meta", "noframes", "style"</dt>
5164: <dd>
5165: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
5166: mode</a>.</p>
5167: </dd>
5168:
5169: <dt>An end tag whose tag name is "br"</dt>
5170: <dd>
5171: <p>Act as described in the "anything else" entry below.</p>
5172: </dd>
5173:
5174: <dt>A start tag whose tag name is one of: "head", "noscript"</dt>
5175: <dt>Any other end tag</dt>
5176: <dd>
5177: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5178: </dd>
5179:
5180: <dt>Anything else</dt>
5181: <dd>
5182:
5183: <!-- can't get here with an EOF and a fragment case -->
5184:
5185: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
5186: name "noscript" had been seen and reprocess the current
5187: token.</p>
5188:
5189: </dd>
5190:
1.755 mike 5191: </dl><h5 id="the-after-head-insertion-mode"><span class="secno">8.2.5.9 </span>The "<dfn title="insertion mode: after head">after head</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 5192:
5193: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-head-insertion-mode" title="insertion
5194: mode: after head">after head</a>", tokens must be handled as follows:</p>
5195:
5196: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
5197: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
1.882 mike 5198: U+000D CARRIAGE RETURN (CR), or U+0020 SPACE</dt>
1.1 mike 5199: <dd>
5200: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
5201: the <a href="#current-node">current node</a>.</p>
5202: </dd>
5203:
5204: <dt>A comment token</dt>
5205: <dd>
1.882 mike 5206: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the <a href="#current-node">current
1.1 mike 5207: node</a> with the <code title="">data</code> attribute set to
5208: the data given in the comment token.</p>
5209: </dd>
5210:
5211: <dt>A DOCTYPE token</dt>
5212: <dd>
5213: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5214: </dd>
5215:
5216: <dt>A start tag whose tag name is "html"</dt>
5217: <dd>
5218: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
5219: mode</a>.</p>
5220: </dd>
5221:
5222: <dt>A start tag whose tag name is "body"</dt>
5223: <dd>
5224:
5225: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5226:
5227: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5228:
5229: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>".</p>
5230:
5231: </dd>
5232:
5233: <dt>A start tag whose tag name is "frameset"</dt>
5234: <dd>
5235:
5236: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5237:
5238: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inframeset" title="insertion mode: in frameset">in frameset</a>".</p>
5239:
5240: </dd>
5241:
5242: <dt>A start tag token whose tag name is one of: "base", "link",
5243: "meta", "noframes", "script", "style", "title"</dt>
5244: <dd>
5245:
5246: <p><a href="#parse-error">Parse error</a>.</p>
5247:
5248: <p>Push the node pointed to by the <a href="#head-element-pointer"><code title="">head</code> element pointer</a> onto the
5249: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
5250:
5251: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
5252: mode</a>.</p>
5253:
5254: <p>Remove the node pointed to by the <a href="#head-element-pointer"><code title="">head</code> element pointer</a> from the <a href="#stack-of-open-elements">stack
5255: of open elements</a>.</p>
5256:
5257: <p class="note">The <a href="#head-element-pointer"><code title="">head</code> element
5258: pointer</a> cannot be null at this point.</p>
5259:
5260: </dd>
5261:
5262: <dt>An end tag whose tag name is one of: "body", "html", "br"</dt>
5263: <dd>
5264: <p>Act as described in the "anything else" entry below.</p>
5265: </dd>
5266:
5267: <dt>A start tag whose tag name is "head"</dt>
5268: <dt>Any other end tag</dt>
5269: <dd>
5270: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5271: </dd>
5272:
5273: <dt>Anything else</dt>
5274: <dd>
5275: <p>Act as if a start tag token with the tag name "body" and no
5276: attributes had been seen, then set the <a href="#frameset-ok-flag">frameset-ok
5277: flag</a> back to "ok", and then reprocess the current
5278: token.</p>
5279: </dd>
5280:
1.755 mike 5281: </dl><h5 id="parsing-main-inbody"><span class="secno">8.2.5.10 </span>The "<dfn title="insertion mode: in body">in body</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 5282:
5283: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inbody" title="insertion
5284: mode: in body">in body</a>", tokens must be handled as follows:</p>
5285:
5286: <dl class="switch"><dt>A character token</dt>
5287: <dd>
5288:
5289: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5290: any.</p>
5291:
5292: <p><a href="#insert-a-character" title="insert a character">Insert the token's
5293: character</a> into the <a href="#current-node">current node</a>.</p>
5294:
5295: <p>If the token is not one of U+0009 CHARACTER TABULATION, U+000A
1.882 mike 5296: LINE FEED (LF), U+000C FORM FEED (FF), U+000D CARRIAGE RETURN
5297: (CR), or U+0020 SPACE, then set the <a href="#frameset-ok-flag">frameset-ok
1.1 mike 5298: flag</a> to "not ok".</p>
5299:
5300: </dd>
5301:
5302: <dt>A comment token</dt>
5303: <dd>
1.882 mike 5304: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the <a href="#current-node">current
1.1 mike 5305: node</a> with the <code title="">data</code> attribute set to
5306: the data given in the comment token.</p>
5307: </dd>
5308:
5309: <dt>A DOCTYPE token</dt>
5310: <dd>
5311: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
5312: </dd>
5313:
5314: <dt>A start tag whose tag name is "html"</dt>
5315: <dd>
5316: <p><a href="#parse-error">Parse error</a>. For each attribute on the token,
5317: check to see if the attribute is already present on the top
5318: element of the <a href="#stack-of-open-elements">stack of open elements</a>. If it is not,
5319: add the attribute and its corresponding value to that element.</p>
5320: </dd>
5321:
5322: <dt>A start tag token whose tag name is one of: "base", "command",
5323: "link", "meta", "noframes", "script", "style", "title"</dt>
5324: <dd>
5325: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
5326: mode</a>.</p>
5327: </dd>
5328:
5329: <dt>A start tag whose tag name is "body"</dt>
5330: <dd>
5331:
5332: <p><a href="#parse-error">Parse error</a>.</p>
5333:
5334: <p>If the second element on the <a href="#stack-of-open-elements">stack of open
1.159 mike 5335: elements</a> is not a <code><a href="semantics.html#the-body-element-0">body</a></code> element, or, if the
1.1 mike 5336: <a href="#stack-of-open-elements">stack of open elements</a> has only one node on it,
5337: then ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
5338:
5339: <p>Otherwise, for each attribute on the token, check to see if
1.159 mike 5340: the attribute is already present on the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 5341: element (the second element) on the <a href="#stack-of-open-elements">stack of open
5342: elements</a>. If it is not, add the attribute and its
5343: corresponding value to that element.</p>
5344:
5345: </dd>
5346:
5347: <dt>A start tag whose tag name is "frameset"</dt>
5348: <dd>
5349:
5350: <p><a href="#parse-error">Parse error</a>.</p>
5351:
5352: <p>If the second element on the <a href="#stack-of-open-elements">stack of open
1.159 mike 5353: elements</a> is not a <code><a href="semantics.html#the-body-element-0">body</a></code> element, or, if the
1.1 mike 5354: <a href="#stack-of-open-elements">stack of open elements</a> has only one node on it,
5355: then ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
5356:
5357: <p>If the <a href="#frameset-ok-flag">frameset-ok flag</a> is set to "not ok", ignore
5358: the token.</p>
5359:
5360: <p>Otherwise, run the following steps:</p>
5361:
5362: <ol><li><p>Remove the second element on the <a href="#stack-of-open-elements">stack of open
5363: elements</a> from its parent node, if it has one.</p></li>
5364:
5365: <li><p>Pop all the nodes from the bottom of the <a href="#stack-of-open-elements">stack of
5366: open elements</a>, from the <a href="#current-node">current node</a> up to,
1.159 mike 5367: but not including, the root <code><a href="semantics.html#the-html-element-0">html</a></code> element.</p>
1.1 mike 5368:
5369: </li><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the
5370: token.</p></li>
5371:
5372: <li><p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inframeset" title="insertion mode: in frameset">in frameset</a>".</p>
5373:
5374: </li></ol></dd>
5375:
5376: <dt>An end-of-file token</dt>
5377: <dd>
5378:
5379: <p>If there is a node in the <a href="#stack-of-open-elements">stack of open elements</a>
1.422 mike 5380: that is not either a <code><a href="semantics.html#the-dd-element">dd</a></code> element, a <code><a href="semantics.html#the-dt-element">dt</a></code>
5381: element, an <code><a href="semantics.html#the-li-element">li</a></code> element, a <code><a href="semantics.html#the-p-element">p</a></code> element, a
1.1 mike 5382: <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element, a <code><a href="tabular-data.html#the-td-element">td</a></code> element, a
5383: <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element, a <code><a href="tabular-data.html#the-th-element">th</a></code> element, a
5384: <code><a href="tabular-data.html#the-thead-element">thead</a></code> element, a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, the
1.159 mike 5385: <code><a href="semantics.html#the-body-element-0">body</a></code> element, or the <code><a href="semantics.html#the-html-element-0">html</a></code> element, then
1.1 mike 5386: this is a <a href="#parse-error">parse error</a>.</p> <!-- (some of those are
1.422 mike 5387: fragment cases) -->
1.1 mike 5388:
5389: <p><a href="#stop-parsing">Stop parsing</a>.</p>
5390:
5391: </dd>
5392:
5393: <dt>An end tag whose tag name is "body"</dt>
5394: <dd>
5395:
5396: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-scope" title="has an element in scope">have a <code>body</code> element
5397: in scope</a>, this is a <a href="#parse-error">parse error</a>; ignore the
5398: token.</p>
5399:
5400: <!-- if we get here, the insertion mode here is forcibly "in
5401: body". -->
5402:
5403: <p>Otherwise, if there is a node in the <a href="#stack-of-open-elements">stack of open
1.422 mike 5404: elements</a> that is not either a <code><a href="semantics.html#the-dd-element">dd</a></code> element, a
1.1 mike 5405: <code><a href="semantics.html#the-dt-element">dt</a></code> element, an <code><a href="semantics.html#the-li-element">li</a></code> element, an
5406: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, an <code><a href="forms.html#the-option-element">option</a></code> element, a
5407: <code><a href="semantics.html#the-p-element">p</a></code> element, an <code><a href="text-level-semantics.html#the-rp-element">rp</a></code> element, an
5408: <code><a href="text-level-semantics.html#the-rt-element">rt</a></code> element, a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element, a
5409: <code><a href="tabular-data.html#the-td-element">td</a></code> element, a <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code> element, a
5410: <code><a href="tabular-data.html#the-th-element">th</a></code> element, a <code><a href="tabular-data.html#the-thead-element">thead</a></code> element, a
1.159 mike 5411: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, the <code><a href="semantics.html#the-body-element-0">body</a></code> element, or the
5412: <code><a href="semantics.html#the-html-element-0">html</a></code> element, then this is a <a href="#parse-error">parse
1.1 mike 5413: error</a>.</p> <!-- (some of those are fragment cases, e.g. for
5414: <tbody> you'd have hit the first paragraph since the <body>
1.422 mike 5415: wouldn't be in scope, unless it was a fragment case) -->
1.1 mike 5416:
5417: <!-- If we ever change the frameset-ok flag to an insertion mode,
5418: then we'd have to somehow keep track of its state when we switch
5419: to after-body. -->
5420:
5421: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-afterbody" title="insertion mode: after body">after body</a>".</p>
5422:
5423: </dd>
5424:
5425: <dt>An end tag whose tag name is "html"</dt>
5426: <dd>
5427:
5428: <p>Act as if an end tag with tag name "body" had been seen,
5429: then, if that token wasn't ignored, reprocess the current
5430: token.</p>
5431:
5432: </dd>
5433:
5434: <!-- start tags for non-phrasing flow content elements -->
5435:
5436: <!-- the normal ones -->
5437: <dt>A start tag whose tag name is one of: "address", "article",
1.683 mike 5438: "aside", "blockquote", "center", <!--v2DATAGRID"datagrid",-->
1.305 mike 5439: "details", "dir", "div", "dl", "fieldset", "figure", "footer",
5440: "header", "hgroup", "menu", "nav", "ol", "p", "section", "ul"</dt>
1.1 mike 5441: <dd>
5442:
5443: <!-- As of May 2008 this doesn't match any browser exactly, but is
5444: as close to what IE does as I can get without doing the non-tree
5445: DOM nonsense, and thus should actually afford better compatibility
5446: when implemented by the other browsers. -->
5447:
5448: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5449: an element in scope">has a <code>p</code> element in
5450: scope</a>, then act as if an end tag with the tag name
5451: "p" had been seen.</p>
5452:
5453: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5454:
5455: </dd>
5456:
5457: <!-- as normal, but close h1-h6 if it's the current node -->
5458: <dt>A start tag whose tag name is one of: "h1", "h2", "h3", "h4",
5459: "h5", "h6"</dt>
5460: <dd>
5461:
5462: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5463: an element in scope">has a <code>p</code> element in
5464: scope</a>, then act as if an end tag with the tag name
5465: "p" had been seen.</p>
5466:
5467: <p>If the <a href="#current-node">current node</a> is an element whose tag name
5468: is one of "h1", "h2", "h3", "h4", "h5", or "h6", then this is a
5469: <a href="#parse-error">parse error</a>; pop the <a href="#current-node">current node</a> off
5470: the <a href="#stack-of-open-elements">stack of open elements</a>.</p>
5471: <!-- See https://bugs.webkit.org/show_bug.cgi?id=12646 -->
5472:
5473: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5474:
5475: </dd>
5476:
5477: <!-- as normal, but drops leading newline -->
5478: <dt>A start tag whose tag name is one of: "pre", "listing"</dt>
5479: <dd>
5480:
5481: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5482: an element in scope">has a <code>p</code> element in
5483: scope</a>, then act as if an end tag with the tag name
5484: "p" had been seen.</p>
5485:
5486: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5487:
5488: <p>If the next token is a U+000A LINE FEED (LF) character
5489: token, then ignore that token and move on to the next
5490: one. (Newlines at the start of <code><a href="semantics.html#the-pre-element">pre</a></code> blocks are
5491: ignored as an authoring convenience.)</p>
5492:
1.882 mike 5493: <!-- <pre>[CR]X will eat the [CR], <pre>X will eat the
5494: , but <pre>X will not eat the . -->
5495:
1.1 mike 5496: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
5497:
5498: </dd>
5499:
5500: <!-- as normal, but interacts with the form element pointer -->
5501: <dt>A start tag whose tag name is "form"</dt>
5502: <dd>
5503:
5504: <p>If the <a href="#form-element-pointer"><code title="form">form</code> element
5505: pointer</a> is not null, then this is a <a href="#parse-error">parse
5506: error</a>; ignore the token.</p>
5507:
5508: <p>Otherwise:</p>
5509:
5510: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5511: an element in scope">has a <code>p</code> element in
5512: scope</a>, then act as if an end tag with the tag name
5513: "p" had been seen.</p>
5514:
5515: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, and set the
5516: <a href="#form-element-pointer"><code title="form">form</code> element pointer</a> to
5517: point to the element created.</p>
5518:
5519: </dd>
5520:
5521: <!-- as normal, but imply </li> when there's another <li> open in weird cases -->
5522: <dt>A start tag whose tag name is "li"</dt>
5523: <dd>
5524:
1.864 mike 5525: <p>Run these steps:</p>
1.1 mike 5526:
5527: <ol><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p></li>
5528:
5529: <li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
5530: node</a> (the bottommost node of the stack).</p></li>
5531:
1.578 mike 5532: <li><p><i>Loop</i>: If <var title="">node</var> is an
5533: <code><a href="semantics.html#the-li-element">li</a></code> element, then act as if an end tag with the tag
5534: name "li" had been seen, then jump to the last step.</p></li>
1.1 mike 5535:
1.578 mike 5536: <li><p>If <var title="">node</var> is not in the
1.1 mike 5537: <a href="#formatting">formatting</a> category, and is not in the
5538: <a href="#phrasing">phrasing</a> category, and is not an
1.306 mike 5539: <code><a href="semantics.html#the-address-element">address</a></code>, <code><a href="semantics.html#the-div-element">div</a></code>, or <code><a href="semantics.html#the-p-element">p</a></code>
1.1 mike 5540: element, then jump to the last step.</p></li> <!-- an element
5541: <foo> is in this list if the following markup:
5542:
5543: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><body><ol><li><foo><li>
5544:
5545: ...results in the second <li> not being (in any way) a descendant
5546: of the first <li>, or if <foo> is a formatting element that gets
5547: reopened later. -->
5548:
5549: <li><p>Otherwise, set <var title="">node</var> to the previous
5550: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to
5551: the step labeled <i>loop</i>.</p></li>
5552:
5553: <li>
5554:
5555: <p>This is the last step.</p>
5556:
5557: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5558: an element in scope">has a <code>p</code> element in
5559: scope</a>, then act as if an end tag with the tag name
5560: "p" had been seen.</p>
5561:
5562: <p>Finally, <a href="#insert-an-html-element">insert an HTML element</a> for the
5563: token.</p>
5564:
5565: </li>
5566:
5567: </ol></dd>
5568:
5569: <!-- as normal, but imply </dt> or </dd> when there's another <dt> or <dd> open in weird cases -->
1.422 mike 5570: <dt>A start tag whose tag name is one of: "dd", "dt"</dt>
1.1 mike 5571: <dd>
5572:
1.854 mike 5573: <p>Run these steps:</p>
1.1 mike 5574:
5575: <ol><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p></li>
5576:
5577: <li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
5578: node</a> (the bottommost node of the stack).</p></li>
5579:
5580: <li><p><i>Loop</i>: If <var title="">node</var> is a
1.422 mike 5581: <code><a href="semantics.html#the-dd-element">dd</a></code> or <code><a href="semantics.html#the-dt-element">dt</a></code> element, then act as if an end
5582: tag with the same tag name as <var title="">node</var> had been
5583: seen, then jump to the last step.</p></li>
1.1 mike 5584:
5585: <li><p>If <var title="">node</var> is not in the
5586: <a href="#formatting">formatting</a> category, and is not in the
5587: <a href="#phrasing">phrasing</a> category, and is not an
1.306 mike 5588: <code><a href="semantics.html#the-address-element">address</a></code>, <code><a href="semantics.html#the-div-element">div</a></code>, or <code><a href="semantics.html#the-p-element">p</a></code>
1.1 mike 5589: element, then jump to the last step.</p></li> <!-- an element
5590: <foo> is in this list if the following markup:
5591:
5592: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><body><dl><dt><foo><dt>
5593:
5594: ...results in the second <dt> not being (in any way) a descendant
5595: of the first <dt>, or if <foo> is a formatting element that gets
5596: reopened later. -->
5597:
5598: <li><p>Otherwise, set <var title="">node</var> to the previous
5599: entry in the <a href="#stack-of-open-elements">stack of open elements</a> and return to
5600: the step labeled <i>loop</i>.</p></li>
5601:
5602: <li>
5603:
5604: <p>This is the last step.</p>
5605:
5606: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5607: an element in scope">has a <code>p</code> element in
5608: scope</a>, then act as if an end tag with the tag name
5609: "p" had been seen.</p>
5610:
5611: <p>Finally, <a href="#insert-an-html-element">insert an HTML element</a> for the
5612: token.</p>
5613:
5614: </li>
5615:
5616: </ol></dd>
5617:
5618: <!-- same as normal, but effectively ends parsing -->
5619: <dt>A start tag whose tag name is "plaintext"</dt>
5620: <dd>
5621:
5622: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
5623: an element in scope">has a <code>p</code> element in
5624: scope</a>, then act as if an end tag with the tag name
5625: "p" had been seen.</p>
5626:
5627: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
5628:
1.541 mike 5629: <p>Switch the tokenizer to the <a href="#plaintext-state">PLAINTEXT state</a>.</p>
1.1 mike 5630:
1.541 mike 5631: <p class="note">Once a start tag with the tag name "plaintext" has
5632: been seen, that will be the last token ever seen other than
5633: character tokens (and the end-of-file token), because there is no
5634: way to switch out of the <a href="#plaintext-state">PLAINTEXT state</a>.</p>
1.1 mike 5635:
5636: </dd>
5637:
5638: <!-- end tags for non-phrasing flow content elements -->
5639:
5640: <!-- the normal ones -->
5641: <dt>An end tag whose tag name is one of: "address", "article",
1.683 mike 5642: "aside", "blockquote", "center", <!--v2DATAGRID"datagrid",-->
1.305 mike 5643: "details", "dir", "div", "dl", "fieldset", "figure", "footer",
5644: "header", "hgroup", "listing", "menu", "nav", "ol", "pre",
5645: "section", "ul"</dt>
1.1 mike 5646: <dd>
5647:
5648: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-scope" title="has an element in scope">have an element in scope</a>
5649: with the same tag name as that of the token, then this is a
5650: <a href="#parse-error">parse error</a>; ignore the token.</p>
5651:
5652: <p>Otherwise, run these steps:</p>
5653:
5654: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5655:
5656: <li><p>If the <a href="#current-node">current node</a> is not an element with
5657: the same tag name as that of the token, then this is a
5658: <a href="#parse-error">parse error</a>.</p></li>
5659:
5660: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5661: until an element with the same tag name as the token has been
5662: popped from the stack.</p></li>
5663:
5664: </ol></dd>
5665:
5666: <!-- removes the form element pointer instead of the matching node -->
5667: <dt>An end tag whose tag name is "form"</dt>
5668: <dd>
5669:
5670: <p>Let <var title="">node</var> be the element that the
5671: <a href="#form-element-pointer"><code title="">form</code> element pointer</a> is set
5672: to.</p>
5673:
5674: <p>Set the <a href="#form-element-pointer"><code title="">form</code> element pointer</a>
5675: to null.</p>
5676:
5677: <p>If <var title="">node</var> is null or the <a href="#stack-of-open-elements">stack of open
5678: elements</a> does not <a href="#has-an-element-in-scope" title="has an element in
5679: scope">have <var title="">node</var> in scope</a>, then this is
5680: a <a href="#parse-error">parse error</a>; ignore the token.</p>
5681:
5682: <p>Otherwise, run these steps:</p>
5683:
5684: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5685:
5686: <li><p>If the <a href="#current-node">current node</a> is not <var title="">node</var>, then this is a <a href="#parse-error">parse
5687: error</a>.</p></li>
5688:
5689: <li><p>Remove <var title="">node</var> from the <a href="#stack-of-open-elements">stack of
5690: open elements</a>.</p></li>
5691:
5692: </ol></dd>
5693:
5694: <!-- as normal, except </p> implies <p> if there's no <p> in scope, and needs care as the elements have optional tags -->
5695: <dt>An end tag whose tag name is "p"</dt>
5696: <dd>
5697:
5698: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-scope" title="has an element in scope">have an element in scope</a>
5699: with the same tag name as that of the token, then this is a
5700: <a href="#parse-error">parse error</a>; act as if a start tag with the tag name
5701: "p" had been seen, then reprocess the current token.</p>
5702:
5703: <p>Otherwise, run these steps:</p>
5704:
5705: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5706: for elements with the same tag name as the token.</p></li>
5707:
5708: <li><p>If the <a href="#current-node">current node</a> is not an element with
5709: the same tag name as that of the token, then this is a
5710: <a href="#parse-error">parse error</a>.</p></li>
5711:
5712: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5713: until an element with the same tag name as the token has been
5714: popped from the stack.</p></li>
5715:
5716: </ol></dd>
5717:
1.234 mike 5718: <!-- as normal, but needs care as the elements have optional tags, and are further scoped by <ol>/<ul> -->
5719: <dt>An end tag whose tag name is "li"</dt>
5720: <dd>
5721:
5722: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-list-item-scope" title="has an element in list item scope">have an element in list
5723: item scope</a> with the same tag name as that of the token,
5724: then this is a <a href="#parse-error">parse error</a>; ignore the token.</p>
5725:
5726: <p>Otherwise, run these steps:</p>
5727:
5728: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5729: for elements with the same tag name as the token.</p></li>
5730:
5731: <li><p>If the <a href="#current-node">current node</a> is not an element with
5732: the same tag name as that of the token, then this is a
5733: <a href="#parse-error">parse error</a>.</p></li>
5734:
5735: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5736: until an element with the same tag name as the token has been
5737: popped from the stack.</p></li>
5738:
5739: </ol></dd>
5740:
1.1 mike 5741: <!-- as normal, but needs care as the elements have optional tags -->
1.422 mike 5742: <dt>An end tag whose tag name is one of: "dd", "dt"</dt>
1.1 mike 5743: <dd>
5744:
5745: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-scope" title="has an element in scope">have an element in scope</a>
5746: with the same tag name as that of the token, then this is a
5747: <a href="#parse-error">parse error</a>; ignore the token.</p>
5748:
5749: <p>Otherwise, run these steps:</p>
5750:
5751: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>, except
5752: for elements with the same tag name as the token.</p></li>
5753:
5754: <li><p>If the <a href="#current-node">current node</a> is not an element with
5755: the same tag name as that of the token, then this is a
5756: <a href="#parse-error">parse error</a>.</p></li>
5757:
5758: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5759: until an element with the same tag name as the token has been
5760: popped from the stack.</p></li>
5761:
5762: </ol></dd>
5763:
5764: <!-- as normal, except acts as a closer for any of the h1-h6 elements -->
5765: <dt>An end tag whose tag name is one of: "h1", "h2", "h3", "h4", "h5", "h6"</dt>
5766: <dd>
5767:
5768: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-scope" title="has an element in scope">have an element in scope</a>
5769: whose tag name is one of "h1", "h2", "h3", "h4", "h5", or "h6",
5770: then this is a <a href="#parse-error">parse error</a>; ignore the token.</p>
5771:
5772: <p>Otherwise, run these steps:</p>
5773:
5774: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
5775:
5776: <li><p>If the <a href="#current-node">current node</a> is not an element with
5777: the same tag name as that of the token, then this is a
5778: <a href="#parse-error">parse error</a>.</p></li>
5779:
5780: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
5781: until an element whose tag name is one of "h1", "h2", "h3", "h4",
5782: "h5", or "h6" has been popped from the stack.</p></li>
5783:
5784: </ol></dd>
5785:
5786: <dt>An end tag whose tag name is "sarcasm"</dt>
5787: <dd>
5788: <p>Take a deep breath, then act as described in the "any other end
5789: tag" entry below.</p>
5790: </dd>
5791:
5792: <!-- ADOPTION AGENCY ELEMENTS
5793: Mozilla-only: bdo blink del ins sub sup q
5794: Safari-only: code dfn kbd nobr samp var wbr
5795: Both: a b big em font i s small strike strong tt u -->
5796:
5797: <dt>A start tag whose tag name is "a"</dt>
5798: <dd>
5799:
5800: <p>If the <a href="#list-of-active-formatting-elements">list of active formatting elements</a>
5801: contains an element whose tag name is "a" between the end of
5802: the list and the last marker on the list (or the start of the
5803: list if there is no marker on the list), then this is a
5804: <a href="#parse-error">parse error</a>; act as if an end tag with the tag
5805: name "a" had been seen, then remove that element from the
5806: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> and the
5807: <a href="#stack-of-open-elements">stack of open elements</a> if the end tag didn't
5808: already remove it (it might not have if the element is not
5809: <a href="#has-an-element-in-table-scope" title="has an element in table scope">in table
5810: scope</a>).</p>
5811:
5812: <p class="example">In the non-conforming stream
5813: <code><a href="a">a<table><a href="b">b</table>x</code>,
1.876 mike 5814: the first <code><a href="text-level-semantics.html#the-a-element">a</a></code> element would be closed upon seeing the
5815: second one, and the "x" character would be inside a link to "b",
5816: not to "a". This is despite the fact that the outer <code><a href="text-level-semantics.html#the-a-element">a</a></code>
5817: element is not in table scope (meaning that a regular
5818: <code></a></code> end tag at the start of the table wouldn't
5819: close the outer <code><a href="text-level-semantics.html#the-a-element">a</a></code> element). The result is that the
5820: two <code><a href="text-level-semantics.html#the-a-element">a</a></code> elements are indirectly nested inside each
5821: other — non-conforming markup will often result in
5822: non-conforming DOMs when parsed.</p>
1.1 mike 5823:
5824: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5825: any.</p>
5826:
5827: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5828: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5829: elements</a>.</p>
5830:
5831: </dd>
5832:
5833: <dt>A start tag whose tag name is one of: "b", "big", "code", "em",
5834: "font", "i", "s", "small", "strike", "strong", "tt", "u"</dt>
5835: <dd>
5836:
5837: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5838: any.</p>
5839:
5840: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5841: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5842: elements</a>.</p>
5843:
5844: </dd>
5845:
5846: <dt>A start tag whose tag name is "nobr"</dt>
5847: <dd>
5848:
5849: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
5850: any.</p>
5851:
5852: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
5853: element in scope">has a <code>nobr</code> element in scope</a>,
5854: then this is a <a href="#parse-error">parse error</a>; act as if an end tag with
5855: the tag name "nobr" had been seen, then once again
5856: <a href="#reconstruct-the-active-formatting-elements">reconstruct the active formatting elements</a>, if
5857: any.</p>
5858:
5859: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Add that
5860: element to the <a href="#list-of-active-formatting-elements">list of active formatting
5861: elements</a>.</p>
5862:
5863: </dd>
5864:
5865: <dt id="adoptionAgency">An end tag whose tag name is one of: "a",
5866: "b", "big", "code", "em", "font", "i", "nobr", "s", "small",
5867: "strike", "strong", "tt", "u"</dt>
5868: <dd>
5869:
1.854 mike 5870: <p>Run these steps:</p>
1.1 mike 5871:
5872: <ol><li>
5873:
5874: <p>Let the <var title="">formatting element</var> be the
5875: last element in the <a href="#list-of-active-formatting-elements">list of active formatting
5876: elements</a> that:</p>
5877:
5878: <ul><li>is between the end of the list and the last scope
5879: marker in the list, if any, or the start of the list
5880: otherwise, and</li>
5881:
5882: <li>has the same tag name as the token.</li>
5883:
5884: </ul><p>If there is no such node, or, if that node is also in the
5885: <a href="#stack-of-open-elements">stack of open elements</a> but the element is not <a href="#has-an-element-in-scope" title="has an element in scope">in scope</a>, then this is a
5886: <a href="#parse-error">parse error</a>; ignore the token, and abort these
5887: steps.</p>
5888:
5889: <p>Otherwise, if there is such a node, but that node is not
5890: in the <a href="#stack-of-open-elements">stack of open elements</a>, then this is a
5891: <a href="#parse-error">parse error</a>; remove the element from the list,
5892: and abort these steps.</p>
5893:
5894: <p>Otherwise, there is a <var title="">formatting
5895: element</var> and that element is in <a href="#stack-of-open-elements" title="stack of
5896: open elements">the stack</a> and is <a href="#has-an-element-in-scope" title="has an
5897: element in scope">in scope</a>. If the element is not the
5898: <a href="#current-node">current node</a>, this is a <a href="#parse-error">parse
5899: error</a>. In any case, proceed with the algorithm as
5900: written in the following steps.</p>
5901:
5902: </li>
5903:
5904: <li><p>Let the <var title="">furthest block</var> be the
5905: topmost node in the <a href="#stack-of-open-elements">stack of open elements</a> that
5906: is lower in the stack than the <var title="">formatting
5907: element</var>, and is not an element in the
5908: <a href="#phrasing">phrasing</a> or <a href="#formatting">formatting</a>
5909: categories. There might not be one.</p></li>
5910:
5911: <li><p>If there is no <var title="">furthest block</var>,
5912: then the UA must skip the subsequent steps and instead just
5913: pop all the nodes from the bottom of the <a href="#stack-of-open-elements">stack of open
5914: elements</a>, from the <a href="#current-node">current node</a> up to and
5915: including the <var title="">formatting element</var>, and
5916: remove the <var title="">formatting element</var> from the
5917: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>.</p></li>
5918:
5919: <li><p>Let the <var title="">common ancestor</var> be the element
5920: immediately above the <var title="">formatting element</var> in the
5921: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
5922:
5923: <li><p>Let a bookmark note the position of the <var title="">formatting element</var> in the <a href="#list-of-active-formatting-elements">list of active
5924: formatting elements</a> relative to the elements on either
5925: side of it in the list.</p></li>
5926:
5927: <li>
5928:
5929: <p>Let <var title="">node</var> and <var title="">last node</var> be the
5930: <var title="">furthest block</var>. Follow these steps:</p>
5931:
5932: <ol><li>Let <var title="">node</var> be the element immediately
5933: above <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
1.436 mike 5934: elements</a>, or if <var title="">node</var> is no longer in
5935: the <a href="#stack-of-open-elements">stack of open elements</a> (e.g. because it got
5936: removed by the next step), the element that was immediately
5937: above <var title="">node</var> in the <a href="#stack-of-open-elements">stack of open
5938: elements</a> before <var title="">node</var> was
5939: removed.</li>
1.1 mike 5940:
5941: <li>If <var title="">node</var> is not in the <a href="#list-of-active-formatting-elements">list of
5942: active formatting elements</a>, then remove <var title="">node</var> from the <a href="#stack-of-open-elements">stack of open
5943: elements</a> and then go back to step 1.</li>
5944:
5945: <li>Otherwise, if <var title="">node</var> is the <var title="">formatting element</var>, then go to the next step
5946: in the overall algorithm.</li>
5947:
5948: <li>Otherwise, if <var title="">last node</var> is the <var title="">furthest block</var>, then move the aforementioned
5949: bookmark to be immediately after the <var title="">node</var> in the <a href="#list-of-active-formatting-elements">list of active formatting
5950: elements</a>.</li>
5951:
5952: <li><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
5953: element <var title="">node</var> was created, replace the entry
5954: for <var title="">node</var> in the <a href="#list-of-active-formatting-elements">list of active
5955: formatting elements</a> with an entry for the new element,
5956: replace the entry for <var title="">node</var> in the
5957: <a href="#stack-of-open-elements">stack of open elements</a> with an entry for the new
5958: element, and let <var title="">node</var> be the new
5959: element.</li>
5960:
5961: <li>Insert <var title="">last node</var> into <var title="">node</var>, first removing it from its previous
5962: parent node if any.</li>
5963:
5964: <li>Let <var title="">last node</var> be <var title="">node</var>.</li>
5965:
5966: <li>Return to step 1 of this inner set of steps.</li>
5967:
5968: </ol></li>
5969:
5970: <li>
5971:
5972: <p>If the <var title="">common ancestor</var> node is a
5973: <code><a href="tabular-data.html#the-table-element">table</a></code>, <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>, <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>,
5974: <code><a href="tabular-data.html#the-thead-element">thead</a></code>, or <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then,
5975: <a href="#foster-parent">foster parent</a> whatever <var title="">last
5976: node</var> ended up being in the previous step, first removing
5977: it from its previous parent node if any.</p>
5978:
5979: <p>Otherwise, append whatever <var title="">last node</var>
5980: ended up being in the previous step to the <var title="">common
5981: ancestor</var> node, first removing it from its previous parent
5982: node if any.</p>
5983:
5984: </li>
5985:
5986: <li><p><a href="#create-an-element-for-the-token">Create an element for the token</a> for which the
5987: <var title="">formatting element</var> was created.</p></li>
5988:
5989: <li><p>Take all of the child nodes of the <var title="">furthest
5990: block</var> and append them to the element created in the last
5991: step.</p></li>
5992:
5993: <li><p>Append that new element to the <var title="">furthest
5994: block</var>.</p></li>
5995:
5996: <li><p>Remove the <var title="">formatting element</var> from the
5997: <a href="#list-of-active-formatting-elements">list of active formatting elements</a>, and insert the
5998: new element into the <a href="#list-of-active-formatting-elements">list of active formatting
5999: elements</a> at the position of the aforementioned
6000: bookmark.</p></li>
6001:
6002: <li><p>Remove the <var title="">formatting element</var> from the
6003: <a href="#stack-of-open-elements">stack of open elements</a>, and insert the new element
6004: into the <a href="#stack-of-open-elements">stack of open elements</a> immediately below
6005: the position of the <var title="">furthest block</var> in that
6006: stack.</p></li>
6007:
6008: <li><p>Jump back to step 1 in this series of steps.</p></li>
6009:
1.334 mike 6010: </ol><p class="note">Because of the way this algorithm causes elements
1.304 mike 6011: to change parents, it has been dubbed the "adoption agency
6012: algorithm" (in contrast with other possible algorithms for dealing
6013: with misnested content, which included the "incest algorithm", the
1.1 mike 6014: "secret affair algorithm", and the "Heisenberg algorithm").</p>
6015:
6016: </dd>
6017:
6018: <dt>A start tag whose tag name is "button"</dt>
6019: <dd>
6020:
6021: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
6022: an element in scope">has a <code>button</code> element in
6023: scope</a>, then this is a <a href="#parse-error">parse error</a>;
6024: act as if an end tag with the tag name "button" had been seen,
6025: then reprocess the token.</p>
6026:
6027: <p>Otherwise:</p>
6028:
6029: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6030: any.</p>
6031:
6032: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6033:
6034: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
6035: formatting elements</a>.</p>
6036:
6037: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6038:
6039: </dd>
6040:
6041: <dt>A start tag token whose tag name is one of: "applet",
6042: "marquee", "object"</dt>
6043: <dd>
6044:
6045: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6046: any.</p>
6047:
6048: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6049:
6050: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
6051: formatting elements</a>.</p>
6052:
6053: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6054:
6055: </dd>
6056:
6057: <dt>An end tag token whose tag name is one of: "applet", "button",
6058: "marquee", "object"</dt>
6059: <dd>
6060:
6061: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-scope" title="has an element in scope">have an element in scope</a>
6062: with the same tag name as that of the token, then this is a
6063: <a href="#parse-error">parse error</a>; ignore the token.</p>
6064:
6065: <p>Otherwise, run these steps:</p>
6066:
6067: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
6068:
6069: <li><p>If the <a href="#current-node">current node</a> is not an element with
6070: the same tag name as that of the token, then this is a
6071: <a href="#parse-error">parse error</a>.</p></li>
6072:
6073: <li><p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
6074: until an element with the same tag name as the token has been
6075: popped from the stack.</p></li>
6076:
6077: <li><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to the
6078: last marker</a>.</li>
6079:
6080: </ol></dd>
6081:
6082: <dt>A start tag whose tag name is "table"</dt>
6083: <dd>
6084:
1.810 mike 6085: <p>If the <code><a href="infrastructure.html#document">Document</a></code> is <em>not</em> set to
1.1 mike 6086: <a href="dom.html#quirks-mode">quirks mode</a>, and the <a href="#stack-of-open-elements">stack of open
6087: elements</a> <a href="#has-an-element-in-scope" title="has an element in scope">has a
6088: <code>p</code> element in scope</a>, then act as if an end tag
6089: with the tag name "p" had been seen.</p> <!-- i hate myself (this
6090: quirk was basically caused by acid2; if i'd realised we could
6091: change the specs when i wrote acid2, we could have avoided having
6092: any parsing-mode quirks) -Hixie -->
6093:
6094: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6095:
6096: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6097:
6098: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6099:
6100: </dd>
6101:
6102: <dt>A start tag whose tag name is one of: "area", "basefont",
1.589 mike 6103: "bgsound", "br", "embed", "img", "input", "keygen", "wbr"</dt>
1.1 mike 6104: <dd>
6105:
6106: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6107: any.</p>
6108:
6109: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6110: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6111: elements</a>.</p>
6112:
6113: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6114: token's <i>self-closing flag</i></a>, if it is set.</p>
6115:
6116: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p> <!--
1.589 mike 6117: shouldn't really do it for <area>, <basefont>, and <bgsound> -->
1.1 mike 6118:
6119: </dd>
6120:
6121: <dt>A start tag whose tag name is one of: "param", "source"</dt>
6122: <dd>
6123:
6124: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6125: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6126: elements</a>.</p>
6127:
6128: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6129: token's <i>self-closing flag</i></a>, if it is set.</p>
6130:
6131: </dd>
6132:
6133: <dt>A start tag whose tag name is "hr"</dt>
6134: <dd>
6135:
6136: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
6137: an element in scope">has a <code>p</code> element in
6138: scope</a>, then act as if an end tag with the tag name
6139: "p" had been seen.</p>
6140:
6141: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6142: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6143: elements</a>.</p>
6144:
6145: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6146: token's <i>self-closing flag</i></a>, if it is set.</p>
6147:
6148: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6149:
6150: </dd>
6151:
6152: <dt>A start tag whose tag name is "image"</dt>
6153: <dd>
6154: <p><a href="#parse-error">Parse error</a>. Change the token's tag name
6155: to "img" and reprocess it. (Don't ask.)</p> <!-- As of
6156: 2005-12, studies showed that around 0.2% of pages used the
6157: <image> element. -->
6158: </dd>
6159:
6160: <dt id="isindex">A start tag whose tag name is "isindex"</dt>
6161: <dd>
6162:
6163: <p><a href="#parse-error">Parse error</a>.</p>
6164:
6165: <p>If the <a href="#form-element-pointer"><code title="">form</code> element
6166: pointer</a> is not null, then ignore the token.</p>
6167:
6168: <p>Otherwise:</p>
6169:
6170: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6171: token's <i>self-closing flag</i></a>, if it is set.</p> <!--
6172: purely to reduce the number of errors (we don't care if they
6173: included the /, they're not supposed to be including the tag at
6174: all! -->
6175:
6176: <p>Act as if a start tag token with the tag name "form" had been seen.</p>
6177:
6178: <p>If the token has an attribute called "action", set the
6179: <code title="attr-form-action">action</code> attribute on the
6180: resulting <code><a href="forms.html#the-form-element">form</a></code> element to the value of the
6181: "action" attribute of the token.</p>
6182:
6183: <p>Act as if a start tag token with the tag name "hr" had been
6184: seen.</p>
6185:
6186: <p>Act as if a start tag token with the tag name "label" had been
6187: seen.</p>
6188:
6189: <p>Act as if a stream of character tokens had been seen (see below
6190: for what they should say).</p>
6191:
6192: <p>Act as if a start tag token with the tag name "input" had been
6193: seen, with all the attributes from the "isindex" token except
6194: "name", "action", and "prompt". Set the <code title="attr-fe-name"><a href="forms.html#attr-fe-name">name</a></code> attribute of the resulting
6195: <code><a href="forms.html#the-input-element">input</a></code> element to the value "<code title="">isindex</code>".</p>
6196:
6197: <p>Act as if a stream of character tokens had been seen (see
6198: below for what they should say).</p>
6199:
6200: <p>Act as if an end tag token with the tag name "label" had been
6201: seen.</p>
6202:
6203: <p>Act as if a start tag token with the tag name "hr" had been
6204: seen.</p>
6205:
6206: <p>Act as if an end tag token with the tag name "form" had been
6207: seen.</p>
6208:
6209: <p>If the token has an attribute with the name "prompt", then the
6210: first stream of characters must be the same string as given in
6211: that attribute, and the second stream of characters must be
6212: empty. Otherwise, the two streams of character tokens together
6213: should, together with the <code><a href="forms.html#the-input-element">input</a></code> element, express the
1.883 mike 6214: equivalent of "This is a searchable index. Enter search keywords:
6215: (input field)" in the user's preferred language.</p>
1.1 mike 6216:
6217: </dd>
6218:
6219: <dt>A start tag whose tag name is "textarea"</dt>
6220: <dd>
6221:
1.854 mike 6222: <p>Run these steps:</p>
6223:
1.1 mike 6224: <ol><li><p><a href="#insert-an-html-element">Insert an HTML element</a> for the
6225: token.</p></li>
6226:
6227: <li><p>If the next token is a U+000A LINE FEED (LF) character
6228: token, then ignore that token and move on to the next
6229: one. (Newlines at the start of <code><a href="forms.html#the-textarea-element">textarea</a></code> elements are
6230: ignored as an authoring convenience.)</p></li>
1.882 mike 6231:
6232: <!-- see comment in <pre> start tag bit -->
1.1 mike 6233:
1.671 mike 6234: <li><p>Switch the tokenizer to the <a href="#rcdata-state">RCDATA
1.541 mike 6235: state</a>.</p></li>
1.1 mike 6236:
6237: <li><p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the
6238: current <a href="#insertion-mode">insertion mode</a>.</p>
6239:
6240: </li><li><p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not
6241: ok".</p></li>
6242:
1.540 mike 6243: <li><p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incdata" title="insertion mode: text">text</a>".</p></li>
1.1 mike 6244:
6245: </ol></dd>
6246:
6247: <dt>A start tag whose tag name is "xmp"</dt>
6248: <dd>
6249:
1.233 mike 6250: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has
6251: an element in scope">has a <code>p</code> element in
6252: scope</a>, then act as if an end tag with the tag name
6253: "p" had been seen.</p>
6254:
1.1 mike 6255: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6256: any.</p>
6257:
6258: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6259:
1.91 mike 6260: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6261:
6262: </dd>
6263:
6264: <dt>A start tag whose tag name is "iframe"</dt>
6265: <dd>
6266:
6267: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6268:
1.91 mike 6269: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6270:
6271: </dd>
6272:
6273: <dt>A start tag whose tag name is "noembed"</dt>
6274: <dt>A start tag whose tag name is "noscript", if the <a href="#scripting-flag">scripting flag</a> is enabled</dt>
6275: <dd>
6276:
1.91 mike 6277: <p>Follow the <a href="#generic-raw-text-element-parsing-algorithm">generic raw text element parsing algorithm</a>.</p>
1.1 mike 6278:
6279: </dd>
6280:
6281: <dt>A start tag whose tag name is "select"</dt>
6282: <dd>
6283:
6284: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6285: any.</p>
6286:
6287: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6288:
6289: <p>Set the <a href="#frameset-ok-flag">frameset-ok flag</a> to "not ok".</p>
6290:
6291: <p>If the <a href="#insertion-mode">insertion mode</a> is one of <a href="#parsing-main-intable" title="insertion mode: in table">in table</a>", "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>", "<a href="#parsing-main-incolgroup" title="insertion mode: in column group">in column group</a>",
6292: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6293: body</a>", "<a href="#parsing-main-intr" title="insertion mode: in row">in
6294: row</a>", or "<a href="#parsing-main-intd" title="insertion mode: in cell">in
6295: cell</a>", then switch the <a href="#insertion-mode">insertion mode</a> to
6296: "<a href="#parsing-main-inselectintable" title="insertion mode: in select in table">in select in
6297: table</a>". Otherwise, switch the <a href="#insertion-mode">insertion mode</a>
6298: to "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>".</p>
6299:
6300: </dd>
6301:
6302: <dt>A start tag whose tag name is one of: "optgroup", "option"</dt>
6303: <dd>
6304:
6305: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
6306: element in scope">has an <code>option</code> element in
6307: scope</a>, then act as if an end tag with the tag name "option"
6308: had been seen.</p>
6309:
6310: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6311: any.</p>
6312:
6313: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6314:
6315: </dd>
6316:
6317: <dt>A start tag whose tag name is one of: "rp", "rt"</dt>
6318: <dd>
6319:
6320: <!-- the parsing rules for ruby really don't match IE much at all,
6321: but in practice the markup used is very simple and so strict
6322: compatibility with IE isn't required. For example, as defined
6323: here we get very, very different behaviour than IE for
6324: pathological cases like:
6325:
6326: <ruby><ol><li><p>a<rt>b
6327: <ruby>a<rt>b<p>c
6328:
6329: But in practice most ruby markup falls into these cases:
6330:
6331: <ruby>a<rt>b</ruby>
6332: <ruby>a<rp>b<rt>c<rp>d</ruby>
6333: <ruby>a<rt>b</rt></ruby>
6334: <ruby>a<rp>b</rp><rt>c</rt><rp>d</rp></ruby>
6335:
6336: -->
6337:
6338: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-scope" title="has an
6339: element in scope">has a <code>ruby</code> element in scope</a>,
6340: then <a href="#generate-implied-end-tags">generate implied end tags</a>. If the <a href="#current-node">current
6341: node</a> is not then a <code><a href="text-level-semantics.html#the-ruby-element">ruby</a></code> element, this is a
6342: <a href="#parse-error">parse error</a>; pop all the nodes from the <a href="#current-node">current
6343: node</a> up to the node immediately before the bottommost
6344: <code><a href="text-level-semantics.html#the-ruby-element">ruby</a></code> element on the <a href="#stack-of-open-elements">stack of open
6345: elements</a>.</p>
6346:
6347: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6348:
6349: </dd>
6350:
6351: <dt>An end tag whose tag name is "br"</dt>
6352: <dd>
6353: <p><a href="#parse-error">Parse error</a>. Act as if a start tag token with
6354: the tag name "br" had been seen. Ignore the end tag token.</p>
6355: </dd>
6356:
6357: <dt>A start tag whose tag name is "math"</dt>
6358: <dd>
6359:
6360: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6361: any.</p>
6362:
6363: <p><a href="#adjust-mathml-attributes">Adjust MathML attributes</a> for the token. (This
6364: fixes the case of MathML attributes that are not all
6365: lowercase.)</p>
6366:
6367: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
6368: fixes the use of namespaced attributes, in particular XLink.)</p>
6369:
6370: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
1.724 mike 6371: <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</p>
1.1 mike 6372:
6373: <!-- If we ever change the frameset-ok flag to an insertion mode,
6374: the following change would be implied, except we'd have to do it
6375: even in the face of a self-closed tag:
6376: <p>Set the <span>frameset-ok flag</span> to "not ok".</p>
6377: -->
6378:
6379: <p>If the token has its <i>self-closing flag</i> set, pop the
6380: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6381: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
6382: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
6383:
6384: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is not already
6385: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
6386: content</a>", let the <a href="#secondary-insertion-mode">secondary insertion mode</a> be
6387: the current <a href="#insertion-mode">insertion mode</a>, and then switch the
6388: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
6389: foreign content">in foreign content</a>".</p>
6390:
6391: </dd>
6392:
6393: <dt>A start tag whose tag name is "svg"</dt>
6394: <dd>
6395:
6396: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6397: any.</p>
6398:
6399: <p><a href="#adjust-svg-attributes">Adjust SVG attributes</a> for the token. (This fixes
6400: the case of SVG attributes that are not all lowercase.)</p>
6401:
6402: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
6403: fixes the use of namespaced attributes, in particular XLink in
6404: SVG.)</p>
6405:
6406: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
1.724 mike 6407: <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</p>
1.1 mike 6408:
6409: <!-- If we ever change the frameset-ok flag to an insertion mode,
6410: the following change would be implied, except we'd have to do it
6411: even in the face of a self-closed tag:
6412: <p>Set the <span>frameset-ok flag</span> to "not ok".</p>
6413: -->
6414:
6415: <p>If the token has its <i>self-closing flag</i> set, pop the
6416: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6417: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
6418: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
6419:
6420: <p>Otherwise, if the <a href="#insertion-mode">insertion mode</a> is not already
6421: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
6422: content</a>", let the <a href="#secondary-insertion-mode">secondary insertion mode</a> be
6423: the current <a href="#insertion-mode">insertion mode</a>, and then switch the
6424: <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-inforeign" title="insertion mode: in
6425: foreign content">in foreign content</a>".</p>
6426:
6427: </dd>
6428:
6429: <dt>A start <!--or end--> tag whose tag name is one of: "caption",
6430: "col", "colgroup", "frame", "head", "tbody", "td", "tfoot", "th",
6431: "thead", "tr"</dt>
6432: <!--<dt>An end tag whose tag name is one of: "area", "base",
6433: "basefont", "bgsound", "command", "embed", "hr", "iframe", "image",
6434: "img", "input", "isindex", "keygen", "link", "meta", "noembed",
1.589 mike 6435: "noframes", "param", "script", "select", "source", "style",
6436: "table", "textarea", "title", "wbr"</dt>-->
1.1 mike 6437: <!--<dt>An end tag whose tag name is "noscript", if the
6438: <span>scripting flag</span> is enabled</dt>-->
6439: <dd>
6440: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6441: <!-- end tags are commented out because since they can never end
6442: up on the stack anyway, the default end tag clause will
6443: automatically handle them. we don't want to have text in the spec
6444: that is just an optimisation, as that detracts from the spec
6445: itself -->
6446: </dd>
6447:
6448: <dt>Any other start tag</dt>
6449: <dd>
6450:
6451: <p><a href="#reconstruct-the-active-formatting-elements">Reconstruct the active formatting elements</a>, if
6452: any.</p>
6453:
6454: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6455:
6456: <p class="note">This element will be a <a href="#phrasing">phrasing</a>
6457: element.</p>
6458:
6459: </dd>
6460:
6461: <dt>Any other end tag</dt>
6462: <dd>
6463:
1.854 mike 6464: <p>Run these steps:</p>
1.1 mike 6465:
6466: <ol><li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
6467: node</a> (the bottommost node of the stack).</p></li>
6468:
6469: <li><p>If <var title="">node</var> has the same tag name as
1.856 mike 6470: the token, then:</p>
1.1 mike 6471:
6472: <ol><li><p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p></li>
6473:
6474: <li><p>If the tag name of the end tag token does not match
6475: the tag name of the <a href="#current-node">current node</a>, this is a
6476: <a href="#parse-error">parse error</a>.</p></li>
6477:
6478: <li><p>Pop all the nodes from the <a href="#current-node">current node</a> up
6479: to <var title="">node</var>, including <var title="">node</var>, then stop these steps.</p></li>
6480:
6481: </ol></li>
6482:
6483: <li><p>Otherwise, if <var title="">node</var> is in neither the
6484: <a href="#formatting">formatting</a> category nor the <a href="#phrasing">phrasing</a>
6485: category, then this is a <a href="#parse-error">parse error</a>; ignore the
6486: token, and abort these steps.</p></li>
6487:
6488: <li><p>Set <var title="">node</var> to the previous entry in the
6489: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
6490:
6491: <li><p>Return to step 2.</p></li>
6492:
6493: </ol></dd>
6494:
1.755 mike 6495: </dl><h5 id="parsing-main-incdata"><span class="secno">8.2.5.11 </span>The "<dfn title="insertion mode: text">text</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 6496:
6497: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incdata" title="insertion
1.540 mike 6498: mode: text">text</a>", tokens must be handled as follows:</p>
1.1 mike 6499:
6500: <dl class="switch"><dt>A character token</dt>
6501: <dd>
6502:
6503: <p><a href="#insert-a-character" title="insert a character">Insert the token's
6504: character</a> into the <a href="#current-node">current node</a>.</p>
6505:
6506: </dd>
6507:
6508: <dt>An end-of-file token</dt>
6509: <dd>
6510:
6511: <!-- can't be the fragment case -->
6512: <p><a href="#parse-error">Parse error</a>.</p>
6513:
6514: <p>If the <a href="#current-node">current node</a> is a <code><a href="semantics.html#script">script</a></code>
1.484 mike 6515: element, mark the <code><a href="semantics.html#script">script</a></code> element as <a href="semantics.html#already-started">"already
6516: started"</a>.</p>
1.1 mike 6517:
6518: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6519: elements</a>.</p>
6520:
6521: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6522: insertion mode</a> and reprocess the current token.</p>
6523:
6524: </dd>
6525:
1.878 mike 6526: <dt id="scriptEndTag">An end tag whose tag name is "script"</dt>
1.1 mike 6527: <dd>
6528:
6529: <p>Let <var title="">script</var> be the <a href="#current-node">current node</a>
6530: (which will be a <code><a href="semantics.html#script">script</a></code> element).</p>
6531:
6532: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6533: elements</a>.</p>
6534:
6535: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6536: insertion mode</a>.</p>
6537:
6538: <p>Let the <var title="">old insertion point</var> have the
6539: same value as the current <a href="#insertion-point">insertion point</a>. Let
6540: the <a href="#insertion-point">insertion point</a> be just before the <a href="#next-input-character">next
6541: input character</a>.</p>
6542:
6543: <p>Increment the parser's <a href="#script-nesting-level">script nesting level</a> by
6544: one.</p>
6545:
6546: <p><a href="semantics.html#running-a-script" title="running a script">Run</a> the <var title="">script</var>. This might cause some script to execute,
1.159 mike 6547: which might cause <a href="embedded-content-0.html#dom-document-write" title="dom-document-write">new characters
1.1 mike 6548: to be inserted into the tokenizer</a>, and might cause the
6549: tokenizer to output more tokens, resulting in a <a href="#nestedParsing">reentrant invocation of the parser</a>.</p>
6550:
6551: <p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a> by
6552: one. If the parser's <a href="#script-nesting-level">script nesting level</a> is zero,
6553: then set the <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
6554:
6555: <p>Let the <a href="#insertion-point">insertion point</a> have the value of the <var title="">old insertion point</var>. (In other words, restore the
6556: <a href="#insertion-point">insertion point</a> to its previous value. This value
6557: might be the "undefined" value.)</p>
6558:
6559: <p id="scriptTagParserResumes">At this stage, if there is a
1.484 mike 6560: <a href="semantics.html#pending-parsing-blocking-script">pending parsing-blocking script</a>, then:</p>
1.1 mike 6561:
6562: <dl class="switch"><dt>If the <a href="#script-nesting-level">script nesting level</a> is not zero:</dt>
6563:
6564: <dd>
6565:
6566: <p>Set the <a href="#parser-pause-flag">parser pause flag</a> to true, and abort the
6567: processing of any nested invocations of the tokenizer, yielding
6568: control back to the caller. (Tokenization will resume when the
6569: caller returns to the "outer" tree construction stage.)</p>
6570:
6571: <p class="note">The tree construction stage of this particular
6572: parser is <a href="#nestedParsing">being called reentrantly</a>,
1.159 mike 6573: say from a call to <code title="dom-document-write"><a href="embedded-content-0.html#dom-document-write">document.write()</a></code>.</p>
1.1 mike 6574:
6575: </dd>
6576:
6577:
6578: <dt>Otherwise:</dt>
6579:
6580: <dd>
6581:
1.854 mike 6582: <p>Run these steps:</p>
1.1 mike 6583:
1.484 mike 6584: <ol><li><p>Let <var title="">the script</var> be the <a href="semantics.html#pending-parsing-blocking-script">pending
6585: parsing-blocking script</a>. There is no longer a <a href="semantics.html#pending-parsing-blocking-script">pending
6586: parsing-blocking script</a>.</p></li>
6587:
6588: <li><p>Block the <a href="#tokenization" title="tokenization">tokenizer</a>
6589: for this instance of the <a href="#html-parser">HTML parser</a>, such that
1.794 mike 6590: the <a href="webappapis.html#event-loop">event loop</a> will not run <a href="webappapis.html#concept-task" title="concept-task">tasks</a> that invoke the <a href="#tokenization" title="tokenization">tokenizer</a>.</p></li>
1.484 mike 6591:
1.794 mike 6592: <li><p><a href="webappapis.html#spin-the-event-loop">Spin the event loop</a> until there is no <a href="semantics.html#a-style-sheet-blocking-scripts" title="a style sheet blocking scripts">style sheet blocking
1.484 mike 6593: scripts</a> and <var title="">the script</var>'s
6594: <a href="semantics.html#ready-to-be-parser-executed">"ready to be parser-executed"</a> flag is set.</p></li>
6595:
6596: <li><p>Unblock the <a href="#tokenization" title="tokenization">tokenizer</a>
6597: for this instance of the <a href="#html-parser">HTML parser</a>, such that
1.794 mike 6598: <a href="webappapis.html#concept-task" title="concept-task">tasks</a> that invoke the <a href="#tokenization" title="tokenization">tokenizer</a> can again be
1.484 mike 6599: run.</p></li>
1.1 mike 6600:
6601: <li><p>Let the <a href="#insertion-point">insertion point</a> be just before the
6602: <a href="#next-input-character">next input character</a>.</p></li>
6603:
6604: <li><p>Increment the parser's <a href="#script-nesting-level">script nesting level</a>
6605: by one (it should be zero before this step, so this sets it to
6606: one).</p></li>
6607:
1.484 mike 6608: <li><p><a href="semantics.html#executing-a-script-block" title="executing a script block">Execute</a>
6609: <var title="">the script</var>.</p></li>
1.1 mike 6610:
6611: <li><p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a>
6612: by one. If the parser's <a href="#script-nesting-level">script nesting level</a> is
6613: zero (which it always should be at this point), then set the
6614: <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
6615:
6616: </li><li><p>Let the <a href="#insertion-point">insertion point</a> be undefined
6617: again.</p></li>
6618:
1.484 mike 6619: <li><p>If there is once again a <a href="semantics.html#pending-parsing-blocking-script">pending parsing-blocking
1.1 mike 6620: script</a>, then repeat these steps from step 1.</p></li>
6621:
6622: </ol></dd>
6623:
6624: </dl></dd>
6625:
6626: <dt>Any other end tag</dt>
6627: <dd>
6628:
6629: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6630: elements</a>.</p>
6631:
6632: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6633: insertion mode</a>.</p>
6634:
6635: </dd>
6636:
1.755 mike 6637: </dl><h5 id="parsing-main-intable"><span class="secno">8.2.5.12 </span>The "<dfn title="insertion mode: in table">in table</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 6638:
6639: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intable" title="insertion
6640: mode: in table">in table</a>", tokens must be handled as follows:</p>
6641:
6642: <dl class="switch"><dt>A character token</dt>
6643: <dd>
6644:
6645: <p>Let the <dfn id="pending-table-character-tokens"><var>pending table character tokens</var></dfn>
6646: be an empty list of tokens.</p>
6647:
6648: <p>Let the <a href="#original-insertion-mode">original insertion mode</a> be the current
6649: <a href="#insertion-mode">insertion mode</a>.</p>
6650:
6651: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intabletext" title="insertion mode: in table text">in table text</a>" and
6652: reprocess the token.</p>
6653:
6654: </dd>
6655:
6656: <dt>A comment token</dt>
6657: <dd>
1.882 mike 6658: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the <a href="#current-node">current
1.1 mike 6659: node</a> with the <code title="">data</code> attribute set to
6660: the data given in the comment token.</p>
6661: </dd>
6662:
6663: <dt>A DOCTYPE token</dt>
6664: <dd>
6665: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6666: </dd>
6667:
6668: <dt>A start tag whose tag name is "caption"</dt>
6669: <dd>
6670:
6671: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6672: below.)</p>
6673:
6674: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
6675: formatting elements</a>.</p>
6676:
6677: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6678: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incaption" title="insertion mode: in caption">in caption</a>".</p>
6679:
6680: </dd>
6681:
6682: <dt>A start tag whose tag name is "colgroup"</dt>
6683: <dd>
6684:
6685: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6686: below.)</p>
6687:
6688: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6689: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-incolgroup" title="insertion mode: in column group">in column
6690: group</a>".</p>
6691:
6692: </dd>
6693:
6694: <dt>A start tag whose tag name is "col"</dt>
6695: <dd>
6696: <p>Act as if a start tag token with the tag name "colgroup"
6697: had been seen, then reprocess the current token.</p>
6698: </dd>
6699:
6700: <dt>A start tag whose tag name is one of: "tbody", "tfoot", "thead"</dt>
6701: <dd>
6702:
6703: <p><a href="#clear-the-stack-back-to-a-table-context">Clear the stack back to a table context</a>. (See
6704: below.)</p>
6705:
6706: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then
6707: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
6708: body</a>".</p>
6709:
6710: </dd>
6711:
6712: <dt>A start tag whose tag name is one of: "td", "th", "tr"</dt>
6713: <dd>
6714: <p>Act as if a start tag token with the tag name "tbody" had
6715: been seen, then reprocess the current token.</p>
6716: </dd>
6717:
6718: <dt>A start tag whose tag name is "table"</dt>
6719: <dd>
6720:
6721: <p><a href="#parse-error">Parse error</a>. Act as if an end tag token with
6722: the tag name "table" had been seen, then, if that token wasn't
6723: ignored, reprocess the current token.</p>
6724:
6725: <p class="note">The fake end tag token here can only be
6726: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6727:
6728: </dd>
6729:
6730: <dt>An end tag whose tag name is "table"</dt>
6731: <dd>
6732:
6733: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
6734: scope</a> with the same tag name as the token, this is a
6735: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6736: case</a>)</p>
6737:
6738: <p>Otherwise:</p>
6739:
6740: <p>Pop elements from this stack until a <code><a href="tabular-data.html#the-table-element">table</a></code>
6741: element has been popped from the stack.</p>
6742:
6743: <p><a href="#reset-the-insertion-mode-appropriately">Reset the insertion mode appropriately</a>.</p>
6744:
6745: </dd>
6746:
6747: <dt>An end tag whose tag name is one of: "body", "caption",
6748: "col", "colgroup", "html", "tbody", "td", "tfoot", "th",
6749: "thead", "tr"</dt>
6750: <dd>
6751: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6752: </dd>
6753:
6754: <dt>A start tag whose tag name is one of: "style", "script"</dt>
6755: <dd>
6756:
6757: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
6758: mode</a>.</p>
6759:
6760: </dd>
6761:
6762: <dt>A start tag whose tag name is "input"</dt>
6763: <dd>
6764:
6765: <p>If the token does not have an attribute with the name "type",
6766: or if it does, but that attribute's value is not an <a href="infrastructure.html#ascii-case-insensitive">ASCII
6767: case-insensitive</a> match for the string "<code title="">hidden</code>", then: act as described in the "anything
6768: else" entry below.</p>
6769:
6770: <p>Otherwise:</p>
6771:
6772: <p><a href="#parse-error">Parse error</a>.</p>
6773:
6774: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6775:
6776: <p>Pop that <code><a href="forms.html#the-input-element">input</a></code> element off the <a href="#stack-of-open-elements">stack of
6777: open elements</a>.</p>
6778:
6779: </dd>
6780:
1.603 mike 6781: <dt>A start tag whose tag name is "form"</dt>
6782: <dd>
6783:
6784: <p><a href="#parse-error">Parse error</a>.</p>
6785:
1.717 mike 6786: <p>If the <a href="#form-element-pointer"><code title="form">form</code> element
6787: pointer</a> is not null, ignore the token.</p>
6788:
6789: <p>Otherwise:</p>
6790:
1.603 mike 6791: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
6792:
1.637 mike 6793: <p>Pop that <code><a href="forms.html#the-form-element">form</a></code> element off the <a href="#stack-of-open-elements">stack of
1.603 mike 6794: open elements</a>.</p>
6795:
6796: </dd>
6797:
1.721 mike 6798: <!-- "form" end tag falls through to in-body, which does the right thing -->
1.717 mike 6799:
1.1 mike 6800: <dt>An end-of-file token</dt>
6801: <dd>
6802:
6803: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 6804: <code><a href="semantics.html#the-html-element-0">html</a></code> element, then this is a <a href="#parse-error">parse
1.1 mike 6805: error</a>.</p>
6806:
6807: <p class="note">It can only be the <a href="#current-node">current node</a> in
6808: the <a href="#fragment-case">fragment case</a>.</p>
6809:
6810: <p><a href="#stop-parsing">Stop parsing</a>.</p>
6811:
6812: </dd>
6813:
6814: <dt>Anything else</dt>
6815: <dd>
6816:
6817: <p><a href="#parse-error">Parse error</a>. Process the token <a href="#using-the-rules-for">using the
6818: rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in
6819: body</a>" <a href="#insertion-mode">insertion mode</a>, except that if the
6820: <a href="#current-node">current node</a> is a <code><a href="tabular-data.html#the-table-element">table</a></code>,
6821: <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>, <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>, <code><a href="tabular-data.html#the-thead-element">thead</a></code>, or
6822: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element, then, whenever a node would be inserted
6823: into the <a href="#current-node">current node</a>, it must instead be <a href="#foster-parent" title="foster parent">foster parented</a>.</p>
6824:
6825: </dd>
6826:
6827: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-context">clear the stack
6828: back to a table context</dfn>, it means that the UA must, while
6829: the <a href="#current-node">current node</a> is not a <code><a href="tabular-data.html#the-table-element">table</a></code>
1.159 mike 6830: element or an <code><a href="semantics.html#the-html-element-0">html</a></code> element, pop elements from the
1.1 mike 6831: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
6832:
6833: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 6834: <code><a href="semantics.html#the-html-element-0">html</a></code> element after this process is a <a href="#fragment-case">fragment
1.1 mike 6835: case</a>.</p>
6836:
6837:
6838:
1.755 mike 6839: <h5 id="parsing-main-intabletext"><span class="secno">8.2.5.13 </span>The "<dfn title="insertion mode: in table text">in table text</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 6840:
6841: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intabletext" title="insertion
6842: mode: in table text">in table text</a>", tokens must be handled
6843: as follows:</p>
6844:
6845: <dl class="switch"><dt>A character token</dt>
6846: <dd>
6847:
6848: <p>Append the character token to the <var><a href="#pending-table-character-tokens">pending table character
6849: tokens</a></var> list.</p>
6850:
6851: </dd>
6852:
6853:
6854: <dt>Anything else</dt>
6855: <dd>
6856:
6857: <p>If any of the tokens in the <var><a href="#pending-table-character-tokens">pending table character
6858: tokens</a></var> list are character tokens that are not one of U+0009
6859: CHARACTER TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED
1.882 mike 6860: (FF), U+000D CARRIAGE RETURN (CR), or U+0020 SPACE, then
1.1 mike 6861: reprocess those character tokens using the rules given in the
6862: "anything else" entry in the <a href="#parsing-main-intable" title="insertion mode: in
6863: table">in table</a>" insertion mode.</p>
6864:
6865: <p>Otherwise, <a href="#insert-a-character" title="insert a character">insert the
6866: characters</a> given by the <var><a href="#pending-table-character-tokens">pending table character
6867: tokens</a></var> list into the <a href="#current-node">current node</a>.</p>
6868:
6869: <p>Switch the <a href="#insertion-mode">insertion mode</a> to the <a href="#original-insertion-mode">original
6870: insertion mode</a> and reprocess the token.</p>
6871:
6872: </dd>
6873:
1.755 mike 6874: </dl><h5 id="parsing-main-incaption"><span class="secno">8.2.5.14 </span>The "<dfn title="insertion mode: in caption">in caption</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 6875:
6876: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incaption" title="insertion
6877: mode: in caption">in caption</a>", tokens must be handled as follows:</p>
6878:
6879: <dl class="switch"><dt>An end tag whose tag name is "caption"</dt>
6880: <dd>
6881:
6882: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
6883: scope</a> with the same tag name as the token, this is a
6884: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
6885: case</a>)</p>
6886:
6887: <p>Otherwise:</p>
6888:
6889: <p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p>
6890:
6891: <p>Now, if the <a href="#current-node">current node</a> is not a
6892: <code><a href="tabular-data.html#the-caption-element">caption</a></code> element, then this is a <a href="#parse-error">parse
6893: error</a>.</p>
6894:
6895: <p>Pop elements from this stack until a <code><a href="tabular-data.html#the-caption-element">caption</a></code>
6896: element has been popped from the stack.</p>
6897:
6898: <p><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to
6899: the last marker</a>.</p>
6900:
6901: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6902:
6903: </dd>
6904:
6905: <dt>A start tag whose tag name is one of: "caption", "col",
6906: "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"</dt>
6907: <dt>An end tag whose tag name is "table"</dt>
6908: <dd>
6909:
6910: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
6911: name "caption" had been seen, then, if that token wasn't
6912: ignored, reprocess the current token.</p>
6913:
6914: <p class="note">The fake end tag token here can only be
6915: ignored in the <a href="#fragment-case">fragment case</a>.</p>
6916:
6917: </dd>
6918:
6919: <dt>An end tag whose tag name is one of: "body", "col",
6920: "colgroup", "html", "tbody", "td", "tfoot", "th", "thead",
6921: "tr"</dt>
6922: <dd>
6923: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6924: </dd>
6925:
6926: <dt>Anything else</dt>
6927: <dd>
6928: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
6929: mode</a>.</p>
6930: </dd>
6931:
1.755 mike 6932: </dl><h5 id="parsing-main-incolgroup"><span class="secno">8.2.5.15 </span>The "<dfn title="insertion mode: in column group">in column group</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 6933:
6934: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-incolgroup" title="insertion
6935: mode: in column group">in column group</a>", tokens must be handled as follows:</p>
6936:
6937: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
6938: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
1.882 mike 6939: U+000D CARRIAGE RETURN (CR), or U+0020 SPACE</dt>
1.1 mike 6940: <dd>
6941: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
6942: the <a href="#current-node">current node</a>.</p>
6943: </dd>
6944:
6945: <dt>A comment token</dt>
6946: <dd>
1.882 mike 6947: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the <a href="#current-node">current
1.1 mike 6948: node</a> with the <code title="">data</code> attribute set to
6949: the data given in the comment token.</p>
6950: </dd>
6951:
6952: <dt>A DOCTYPE token</dt>
6953: <dd>
6954: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6955: </dd>
6956:
6957: <dt>A start tag whose tag name is "html"</dt>
6958: <dd>
6959: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
6960: mode</a>.</p>
6961: </dd>
6962:
6963: <dt>A start tag whose tag name is "col"</dt>
6964: <dd>
6965:
6966: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token. Immediately
6967: pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
6968: elements</a>.</p>
6969:
6970: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
6971: token's <i>self-closing flag</i></a>, if it is set.</p>
6972:
6973: </dd>
6974:
6975: <dt>An end tag whose tag name is "colgroup"</dt>
6976: <dd>
6977:
6978: <p>If the <a href="#current-node">current node</a> is the root
1.159 mike 6979: <code><a href="semantics.html#the-html-element-0">html</a></code> element, then this is a <a href="#parse-error">parse
1.1 mike 6980: error</a>; ignore the token. (<a href="#fragment-case">fragment
6981: case</a>)</p>
6982:
6983: <p>Otherwise, pop the <a href="#current-node">current node</a> (which will be
6984: a <code><a href="tabular-data.html#the-colgroup-element">colgroup</a></code> element) from the <a href="#stack-of-open-elements">stack of open
6985: elements</a>. Switch the <a href="#insertion-mode">insertion mode</a> to
6986: "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
6987:
6988: </dd>
6989:
6990: <dt>An end tag whose tag name is "col"</dt>
6991: <dd>
6992: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
6993: </dd>
6994:
6995: <dt>An end-of-file token</dt>
6996: <dd>
6997:
1.159 mike 6998: <p>If the <a href="#current-node">current node</a> is the root <code><a href="semantics.html#the-html-element-0">html</a></code>
1.1 mike 6999: element, then <a href="#stop-parsing">stop parsing</a>. (<a href="#fragment-case">fragment
7000: case</a>)</p>
7001:
7002: <p>Otherwise, act as described in the "anything else" entry
7003: below.</p>
7004:
7005: </dd>
7006:
7007: <dt>Anything else</dt>
7008: <dd>
7009:
7010: <p>Act as if an end tag with the tag name "colgroup" had been
7011: seen, and then, if that token wasn't ignored, reprocess the
7012: current token.</p>
7013:
7014: <p class="note">The fake end tag token here can only be
7015: ignored in the <a href="#fragment-case">fragment case</a>.</p>
7016:
7017: </dd>
7018:
1.755 mike 7019: </dl><h5 id="parsing-main-intbody"><span class="secno">8.2.5.16 </span>The "<dfn title="insertion mode: in table body">in table body</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7020:
7021: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intbody" title="insertion
7022: mode: in table body">in table body</a>", tokens must be handled as follows:</p>
7023:
7024: <dl class="switch"><dt>A start tag whose tag name is "tr"</dt>
7025: <dd>
7026:
7027: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
7028: context</a>. (See below.)</p>
7029:
7030: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then switch
7031: the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion mode:
7032: in row">in row</a>".</p>
7033:
7034: </dd>
7035:
7036: <dt>A start tag whose tag name is one of: "th", "td"</dt>
7037: <dd>
7038: <p><a href="#parse-error">Parse error</a>. Act as if a start tag with
7039: the tag name "tr" had been seen, then reprocess the current
7040: token.</p>
7041: </dd>
7042:
7043: <dt>An end tag whose tag name is one of: "tbody", "tfoot",
7044: "thead"</dt>
7045: <dd>
7046:
7047: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
7048: scope</a> with the same tag name as the token, this is a
7049: <a href="#parse-error">parse error</a>. Ignore the token.</p>
7050:
7051: <p>Otherwise:</p>
7052:
7053: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
7054: context</a>. (See below.)</p>
7055:
7056: <p>Pop the <a href="#current-node">current node</a> from the <a href="#stack-of-open-elements">stack of
7057: open elements</a>. Switch the <a href="#insertion-mode">insertion mode</a>
7058: to "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>".</p>
7059:
7060: </dd>
7061:
7062: <dt>A start tag whose tag name is one of: "caption", "col",
7063: "colgroup", "tbody", "tfoot", "thead"</dt>
7064: <dt>An end tag whose tag name is "table"</dt>
7065: <dd>
7066:
7067: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have a
7068: <code>tbody</code>, <code>thead</code>, or <code>tfoot</code>
7069: element in table scope</a>, this is a <a href="#parse-error">parse
7070: error</a>. Ignore the token. (<a href="#fragment-case">fragment
7071: case</a>)</p>
7072:
7073: <p>Otherwise:</p>
7074:
7075: <p><a href="#clear-the-stack-back-to-a-table-body-context">Clear the stack back to a table body
7076: context</a>. (See below.)</p>
7077:
7078: <p>Act as if an end tag with the same tag name as the
7079: <a href="#current-node">current node</a> ("tbody", "tfoot", or "thead") had
7080: been seen, then reprocess the current token.</p>
7081:
7082: </dd>
7083:
7084: <dt>An end tag whose tag name is one of: "body", "caption",
7085: "col", "colgroup", "html", "td", "th", "tr"</dt>
7086: <dd>
7087: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7088: </dd>
7089:
7090: <dt>Anything else</dt>
7091: <dd>
7092: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>" <a href="#insertion-mode">insertion
7093: mode</a>.</p>
7094: </dd>
7095:
7096: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-body-context">clear the stack
7097: back to a table body context</dfn>, it means that the UA must,
7098: while the <a href="#current-node">current node</a> is not a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>,
1.159 mike 7099: <code><a href="tabular-data.html#the-tfoot-element">tfoot</a></code>, <code><a href="tabular-data.html#the-thead-element">thead</a></code>, or <code><a href="semantics.html#the-html-element-0">html</a></code>
1.1 mike 7100: element, pop elements from the <a href="#stack-of-open-elements">stack of open
7101: elements</a>.</p>
7102:
7103: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 7104: <code><a href="semantics.html#the-html-element-0">html</a></code> element after this process is a <a href="#fragment-case">fragment
1.1 mike 7105: case</a>.</p>
7106:
7107:
1.755 mike 7108: <h5 id="parsing-main-intr"><span class="secno">8.2.5.17 </span>The "<dfn title="insertion mode: in row">in row</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7109:
7110: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intr" title="insertion
7111: mode: in row">in row</a>", tokens must be handled as follows:</p>
7112:
7113: <dl class="switch"><dt>A start tag whose tag name is one of: "th", "td"</dt>
7114: <dd>
7115:
7116: <p><a href="#clear-the-stack-back-to-a-table-row-context">Clear the stack back to a table row
7117: context</a>. (See below.)</p>
7118:
7119: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token, then switch
7120: the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intd" title="insertion mode:
7121: in cell">in cell</a>".</p>
7122:
7123: <p>Insert a marker at the end of the <a href="#list-of-active-formatting-elements">list of active
7124: formatting elements</a>.</p>
7125:
7126: </dd>
7127:
7128: <dt>An end tag whose tag name is "tr"</dt>
7129: <dd>
7130:
7131: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
7132: scope</a> with the same tag name as the token, this is a
7133: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
7134: case</a>)</p>
7135:
7136: <p>Otherwise:</p>
7137:
7138: <p><a href="#clear-the-stack-back-to-a-table-row-context">Clear the stack back to a table row
7139: context</a>. (See below.)</p>
7140:
7141: <p>Pop the <a href="#current-node">current node</a> (which will be a
7142: <code><a href="tabular-data.html#the-tr-element">tr</a></code> element) from the <a href="#stack-of-open-elements">stack of open
7143: elements</a>. Switch the <a href="#insertion-mode">insertion mode</a> to
7144: "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
7145: body</a>".</p>
7146:
7147: </dd>
7148:
7149: <dt>A start tag whose tag name is one of: "caption", "col",
7150: "colgroup", "tbody", "tfoot", "thead", "tr"</dt>
7151: <dt>An end tag whose tag name is "table"</dt>
7152: <dd>
7153:
7154: <p>Act as if an end tag with the tag name "tr" had been seen,
7155: then, if that token wasn't ignored, reprocess the current
7156: token.</p>
7157:
7158: <p class="note">The fake end tag token here can only be
7159: ignored in the <a href="#fragment-case">fragment case</a>.</p>
7160:
7161: </dd>
7162:
7163: <dt>An end tag whose tag name is one of: "tbody", "tfoot",
7164: "thead"</dt>
7165: <dd>
7166:
7167: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
7168: scope</a> with the same tag name as the token, this is a
7169: <a href="#parse-error">parse error</a>. Ignore the token.</p>
7170:
7171: <p>Otherwise, act as if an end tag with the tag name "tr" had
7172: been seen, then reprocess the current token.</p>
7173:
7174: </dd>
7175:
7176: <dt>An end tag whose tag name is one of: "body", "caption",
7177: "col", "colgroup", "html", "td", "th"</dt>
7178: <dd>
7179: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7180: </dd>
7181:
7182: <dt>Anything else</dt>
7183: <dd>
7184: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>" <a href="#insertion-mode">insertion
7185: mode</a>.</p>
7186: </dd>
7187:
7188: </dl><p>When the steps above require the UA to <dfn id="clear-the-stack-back-to-a-table-row-context">clear the stack
7189: back to a table row context</dfn>, it means that the UA must,
7190: while the <a href="#current-node">current node</a> is not a <code><a href="tabular-data.html#the-tr-element">tr</a></code>
1.159 mike 7191: element or an <code><a href="semantics.html#the-html-element-0">html</a></code> element, pop elements from the
1.1 mike 7192: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7193:
7194: <p class="note">The <a href="#current-node">current node</a> being an
1.159 mike 7195: <code><a href="semantics.html#the-html-element-0">html</a></code> element after this process is a <a href="#fragment-case">fragment
1.1 mike 7196: case</a>.</p>
7197:
7198:
1.755 mike 7199: <h5 id="parsing-main-intd"><span class="secno">8.2.5.18 </span>The "<dfn title="insertion mode: in cell">in cell</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7200:
7201: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intd" title="insertion
7202: mode: in cell">in cell</a>", tokens must be handled as follows:</p>
7203:
7204: <dl class="switch"><dt>An end tag whose tag name is one of: "td", "th"</dt>
7205: <dd>
7206:
7207: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
7208: scope</a> with the same tag name as that of the token, then
7209: this is a <a href="#parse-error">parse error</a> and the token must be
7210: ignored.</p>
7211:
7212: <p>Otherwise:</p>
7213:
7214: <p><a href="#generate-implied-end-tags">Generate implied end tags</a>.</p>
7215:
7216: <p>Now, if the <a href="#current-node">current node</a> is not an element
7217: with the same tag name as the token, then this is a
7218: <a href="#parse-error">parse error</a>.</p>
7219:
1.856 mike 7220: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a> stack
7221: until an element with the same tag name as the token has been
7222: popped from the stack.</p>
1.1 mike 7223:
7224: <p><a href="#clear-the-list-of-active-formatting-elements-up-to-the-last-marker">Clear the list of active formatting elements up to
7225: the last marker</a>.</p>
7226:
7227: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-intr" title="insertion mode: in row">in row</a>". (The
7228: <a href="#current-node">current node</a> will be a <code><a href="tabular-data.html#the-tr-element">tr</a></code> element at
7229: this point.)</p>
7230:
7231: </dd>
7232:
7233: <dt>A start tag whose tag name is one of: "caption", "col",
7234: "colgroup", "tbody", "td", "tfoot", "th", "thead", "tr"</dt>
7235: <dd>
7236:
7237: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does
7238: <em>not</em> <a href="#has-an-element-in-table-scope" title="has an element in table scope">have
7239: a <code>td</code> or <code>th</code> element in table
7240: scope</a>, then this is a <a href="#parse-error">parse error</a>; ignore
7241: the token. (<a href="#fragment-case">fragment case</a>)</p>
7242:
7243: <p>Otherwise, <a href="#close-the-cell">close the cell</a> (see below) and
7244: reprocess the current token.</p>
7245:
7246: </dd>
7247:
7248: <dt>An end tag whose tag name is one of: "body", "caption",
7249: "col", "colgroup", "html"</dt>
7250: <dd>
7251: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7252: </dd>
7253:
7254: <dt>An end tag whose tag name is one of: "table", "tbody",
7255: "tfoot", "thead", "tr"</dt>
7256: <dd>
7257:
7258: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
7259: scope</a> with the same tag name as that of the token
7260: (which can only happen for "tbody", "tfoot" and "thead", or,
7261: in the <a href="#fragment-case">fragment case</a>), then this is a <a href="#parse-error">parse
7262: error</a> and the token must be ignored.</p>
7263:
7264: <p>Otherwise, <a href="#close-the-cell">close the cell</a> (see below) and
7265: reprocess the current token.</p>
7266:
7267: </dd>
7268:
7269: <dt>Anything else</dt>
7270: <dd>
7271: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7272: mode</a>.</p>
7273: </dd>
7274:
7275: </dl><p>Where the steps above say to <dfn id="close-the-cell">close the cell</dfn>, they
7276: mean to run the following algorithm:</p>
7277:
7278: <ol><li><p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-table-scope" title="has an element in table scope">has a <code>td</code>
7279: element in table scope</a>, then act as if an end tag token
7280: with the tag name "td" had been seen.</p></li>
7281:
7282: <li><p>Otherwise, the <a href="#stack-of-open-elements">stack of open elements</a> will
7283: <a href="#has-an-element-in-table-scope" title="has an element in table scope">have a
7284: <code>th</code> element in table scope</a>; act as if an end
7285: tag token with the tag name "th" had been seen.</p></li>
7286:
7287: </ol><p class="note">The <a href="#stack-of-open-elements">stack of open elements</a> cannot
7288: have both a <code><a href="tabular-data.html#the-td-element">td</a></code> and a <code><a href="tabular-data.html#the-th-element">th</a></code> element <a href="#has-an-element-in-table-scope" title="has an element in table scope">in table scope</a> at
7289: the same time, nor can it have neither when the <a href="#insertion-mode">insertion
7290: mode</a> is "<a href="#parsing-main-intd" title="insertion mode: in cell">in
7291: cell</a>".</p>
7292:
7293:
1.755 mike 7294: <h5 id="parsing-main-inselect"><span class="secno">8.2.5.19 </span>The "<dfn title="insertion mode: in select">in select</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7295:
7296: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inselect" title="insertion
7297: mode: in select">in select</a>", tokens must be handled as follows:</p>
7298:
7299: <dl class="switch"><dt>A character token</dt>
7300: <dd>
7301: <p><a href="#insert-a-character" title="insert a character">Insert the token's
7302: character</a> into the <a href="#current-node">current node</a>.</p>
7303: </dd>
7304:
7305: <dt>A comment token</dt>
7306: <dd>
1.882 mike 7307: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the <a href="#current-node">current
1.1 mike 7308: node</a> with the <code title="">data</code> attribute set to
7309: the data given in the comment token.</p>
7310: </dd>
7311:
7312: <dt>A DOCTYPE token</dt>
7313: <dd>
7314: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7315: </dd>
7316:
7317: <dt>A start tag whose tag name is "html"</dt>
7318: <dd>
7319: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7320: mode</a>.</p>
7321: </dd>
7322:
7323: <dt>A start tag whose tag name is "option"</dt>
7324: <dd>
7325:
7326: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7327: element, act as if an end tag with the tag name "option" had
7328: been seen.</p>
7329:
7330: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7331:
7332: </dd>
7333:
7334: <dt>A start tag whose tag name is "optgroup"</dt>
7335: <dd>
7336:
7337: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7338: element, act as if an end tag with the tag name "option" had
7339: been seen.</p>
7340:
7341: <p>If the <a href="#current-node">current node</a> is an
7342: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, act as if an end tag with the
7343: tag name "optgroup" had been seen.</p>
7344:
7345: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7346:
7347: </dd>
7348:
7349: <dt>An end tag whose tag name is "optgroup"</dt>
7350: <dd>
7351:
7352: <p>First, if the <a href="#current-node">current node</a> is an
7353: <code><a href="forms.html#the-option-element">option</a></code> element, and the node immediately before
7354: it in the <a href="#stack-of-open-elements">stack of open elements</a> is an
7355: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, then act as if an end tag with
7356: the tag name "option" had been seen.</p>
7357:
7358: <p>If the <a href="#current-node">current node</a> is an
7359: <code><a href="forms.html#the-optgroup-element">optgroup</a></code> element, then pop that node from the
7360: <a href="#stack-of-open-elements">stack of open elements</a>. Otherwise, this is a
7361: <a href="#parse-error">parse error</a>; ignore the token.</p>
7362:
7363: </dd>
7364:
7365: <dt>An end tag whose tag name is "option"</dt>
7366: <dd>
7367:
7368: <p>If the <a href="#current-node">current node</a> is an <code><a href="forms.html#the-option-element">option</a></code>
7369: element, then pop that node from the <a href="#stack-of-open-elements">stack of open
7370: elements</a>. Otherwise, this is a <a href="#parse-error">parse
7371: error</a>; ignore the token.</p>
7372:
7373: </dd>
7374:
7375: <dt>An end tag whose tag name is "select"</dt>
7376: <dd>
7377:
7378: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have an element in table
7379: scope</a> with the same tag name as the token, this is a
7380: <a href="#parse-error">parse error</a>. Ignore the token. (<a href="#fragment-case">fragment
7381: case</a>)</p>
7382:
7383: <p>Otherwise:</p>
7384:
7385: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a>
7386: until a <code><a href="forms.html#the-select-element">select</a></code> element has been popped from the
7387: stack.</p>
7388:
7389: <p><a href="#reset-the-insertion-mode-appropriately">Reset the insertion mode appropriately</a>.</p>
7390:
7391: </dd>
7392:
7393: <dt>A start tag whose tag name is "select"</dt>
7394: <dd>
7395:
7396: <p><a href="#parse-error">Parse error</a>. Act as if the token had been
7397: an end tag with the tag name "select" instead.</p>
7398:
7399: </dd>
7400:
7401: <dt>A start tag whose tag name is one of: "input", "keygen", "textarea"</dt>
7402: <dd>
1.73 mike 7403:
7404: <p><a href="#parse-error">Parse error</a>.</p>
7405:
1.124 mike 7406: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> does not <a href="#has-an-element-in-table-scope" title="has an element in table scope">have a <code>select</code>
7407: element in table scope</a>, ignore the token. (<a href="#fragment-case">fragment
7408: case</a>)</p>
1.73 mike 7409:
7410: <p>Otherwise, act as if an end tag with the tag name "select" had
7411: been seen, and reprocess the token.</p>
7412:
1.1 mike 7413: </dd>
7414:
7415: <dt>A start tag token whose tag name is "script"</dt>
7416: <dd>
7417: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
7418: mode</a>.</p>
7419: </dd>
7420:
7421: <dt>An end-of-file token</dt>
7422: <dd>
7423:
7424: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 7425: <code><a href="semantics.html#the-html-element-0">html</a></code> element, then this is a <a href="#parse-error">parse
1.1 mike 7426: error</a>.</p>
7427:
7428: <p class="note">It can only be the <a href="#current-node">current node</a> in
7429: the <a href="#fragment-case">fragment case</a>.</p>
7430:
7431: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7432:
7433: </dd>
7434:
7435: <dt>Anything else</dt>
7436: <dd>
7437: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7438: </dd>
7439:
1.755 mike 7440: </dl><h5 id="parsing-main-inselectintable"><span class="secno">8.2.5.20 </span>The "<dfn title="insertion mode: in select in table">in select in table</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7441:
7442: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inselectintable" title="insertion
7443: mode: in select in table">in select in table</a>", tokens must be handled as follows:</p>
7444:
7445: <dl class="switch"><dt>A start tag whose tag name is one of: "caption", "table",
7446: "tbody", "tfoot", "thead", "tr", "td", "th"</dt>
7447: <dd>
7448: <p><a href="#parse-error">Parse error</a>. Act as if an end tag with the tag
7449: name "select" had been seen, and reprocess the token.</p>
7450: </dd>
7451:
7452: <dt>An end tag whose tag name is one of: "caption", "table",
7453: "tbody", "tfoot", "thead", "tr", "td", "th"</dt>
7454: <dd>
7455:
7456: <p><a href="#parse-error">Parse error</a>.</p>
7457:
7458: <p>If the <a href="#stack-of-open-elements">stack of open elements</a> <a href="#has-an-element-in-table-scope">has an
7459: element in table scope</a> with the same tag name as that
7460: of the token, then act as if an end tag with the tag name
7461: "select" had been seen, and reprocess the token. Otherwise,
7462: ignore the token.</p>
7463:
7464: </dd>
7465:
7466: <dt>Anything else</dt>
7467: <dd>
7468: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inselect" title="insertion mode: in select">in select</a>" <a href="#insertion-mode">insertion
7469: mode</a>.</p>
7470: </dd>
7471:
1.755 mike 7472: </dl><h5 id="parsing-main-inforeign"><span class="secno">8.2.5.21 </span>The "<dfn title="insertion mode: in foreign content">in foreign content</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7473:
7474: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inforeign" title="insertion
7475: mode: in foreign content">in foreign content</a>", tokens must be
7476: handled as follows:</p>
7477:
7478: <dl class="switch"><dt>A character token</dt>
7479: <dd>
7480:
7481: <p><a href="#insert-a-character" title="insert a character">Insert the token's
7482: character</a> into the <a href="#current-node">current node</a>.</p>
7483:
7484: <p>If the token is not one of U+0009 CHARACTER TABULATION, U+000A
1.882 mike 7485: LINE FEED (LF), U+000C FORM FEED (FF), U+000D CARRIAGE RETURN
7486: (CR), or U+0020 SPACE, then set the <a href="#frameset-ok-flag">frameset-ok
1.1 mike 7487: flag</a> to "not ok".</p>
7488:
7489: </dd>
7490:
7491: <dt>A comment token</dt>
7492: <dd>
1.882 mike 7493: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the <a href="#current-node">current
1.1 mike 7494: node</a> with the <code title="">data</code> attribute set to
7495: the data given in the comment token.</p>
7496: </dd>
7497:
7498: <dt>A DOCTYPE token</dt>
7499: <dd>
7500: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7501: </dd>
7502:
1.878 mike 7503: <dt id="scriptForeignEndTag">An end tag whose tag name is "script", if the <a href="#current-node">current node</a> is a <code title="">script</code> element in the <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</dt>
1.1 mike 7504: <dd>
7505:
7506: <p>Pop the <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
7507: elements</a>.</p>
7508:
7509: <p>Let the <var title="">old insertion point</var> have the
7510: same value as the current <a href="#insertion-point">insertion point</a>. Let
7511: the <a href="#insertion-point">insertion point</a> be just before the <a href="#next-input-character">next
7512: input character</a>.</p>
7513:
7514: <p>Increment the parser's <a href="#script-nesting-level">script nesting level</a> by
7515: one. Set the <a href="#parser-pause-flag">parser pause flag</a> to true.</p>
7516:
7517: <p><a href="http://www.w3.org/TR/SVGMobile12/script.html#ScriptContentProcessing">Process
7518: the <code title="">script</code> element</a> according to the SVG
1.187 mike 7519: rules, if the user agent supports SVG. <a href="references.html#refsSVG">[SVG]</a></p>
1.1 mike 7520:
1.159 mike 7521: <p class="note">Even if this causes <a href="embedded-content-0.html#dom-document-write" title="dom-document-write">new characters to be inserted into the
1.1 mike 7522: tokenizer</a>, the parser will not be executed reentrantly,
7523: since the <a href="#parser-pause-flag">parser pause flag</a> is true.</p>
7524:
7525: <p>Decrement the parser's <a href="#script-nesting-level">script nesting level</a> by
7526: one. If the parser's <a href="#script-nesting-level">script nesting level</a> is zero,
7527: then set the <a href="#parser-pause-flag">parser pause flag</a> to false.</p>
7528:
7529: <p>Let the <a href="#insertion-point">insertion point</a> have the value of the <var title="">old insertion point</var>. (In other words, restore the
7530: <a href="#insertion-point">insertion point</a> to its previous value. This value
7531: might be the "undefined" value.)</p>
7532:
7533: </dd>
7534:
1.855 mike 7535: <dt>An end tag, if the <a href="#current-node">current node</a> is not an element in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>.</dt>
7536:
7537: <dd>
7538:
7539: <p>Run these steps:</p>
7540:
7541: <ol><li><p>Initialize <var title="">node</var> to be the <a href="#current-node">current
7542: node</a> (the bottommost node of the stack).</p></li>
7543:
7544: <li><p>If <var title="">node</var> is not an element with the
7545: same tag name as the token, then this is a <a href="#parse-error">parse
7546: error</a>.</p></li>
7547:
7548: <li><p><i>Loop</i>: If <var title="">node</var> has the same tag
7549: name as the token, pop elements from the <a href="#stack-of-open-elements">stack of
7550: open elements</a> until <var title="">node</var> has been
7551: popped from the stack, and then abort these steps.</p></li>
7552:
7553: <li><p>Set <var title="">node</var> to the previous entry in the
7554: <a href="#stack-of-open-elements">stack of open elements</a>.</p></li>
7555:
7556: <li>
7557:
7558: <p>If <var title="">node</var> is an element in the <a href="infrastructure.html#html-namespace-0">HTML
7559: namespace</a>, process the token <a href="#using-the-rules-for">using the rules
7560: for</a> the <a href="#secondary-insertion-mode">secondary insertion mode</a>. If, after
7561: doing so, the <a href="#insertion-mode">insertion mode</a> is still "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
7562: content</a>", but there is no element <a href="#has-an-element-in-scope" title="has an
7563: element in scope">in scope</a> that has a namespace other
7564: than the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>, switch the <a href="#insertion-mode">insertion
7565: mode</a> to the <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7566:
7567: </li>
7568:
7569: <li><p>Return to the step labeled <i>loop</i>.</p></li>
7570:
7571: </ol></dd>
7572:
1.724 mike 7573: <dt>A start tag whose tag name is neither "mglyph" nor "malignmark", if the <a href="#current-node">current node</a> is an <code title="">mi</code> element in the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</dt>
7574: <dt>A start tag whose tag name is neither "mglyph" nor "malignmark", if the <a href="#current-node">current node</a> is an <code title="">mo</code> element in the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</dt>
7575: <dt>A start tag whose tag name is neither "mglyph" nor "malignmark", if the <a href="#current-node">current node</a> is an <code title="">mn</code> element in the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</dt>
7576: <dt>A start tag whose tag name is neither "mglyph" nor "malignmark", if the <a href="#current-node">current node</a> is an <code title="">ms</code> element in the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</dt>
7577: <dt>A start tag whose tag name is neither "mglyph" nor "malignmark", if the <a href="#current-node">current node</a> is an <code title="">mtext</code> element in the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</dt>
7578: <dt>A start tag whose tag name is "svg", if the <a href="#current-node">current node</a> is an <code title="">annotation-xml</code> element in the <a href="infrastructure.html#mathml-namespace">MathML namespace</a>.</dt>
7579: <dt>A start tag, if the <a href="#current-node">current node</a> is a <code title="">foreignObject</code> element in the <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</dt>
7580: <dt>A start tag, if the <a href="#current-node">current node</a> is a <code title="">desc</code> element in the <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</dt>
7581: <dt>A start tag, if the <a href="#current-node">current node</a> is a <code title="">title</code> element in the <a href="infrastructure.html#svg-namespace">SVG namespace</a>.</dt>
7582: <dt>A start tag, if the <a href="#current-node">current node</a> is an element in the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>.</dt>
1.855 mike 7583: <dt>Any other end tag</dt>
1.1 mike 7584: <dd>
7585:
7586: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the
7587: <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7588:
7589: <p>If, after doing so, the <a href="#insertion-mode">insertion mode</a> is still
7590: "<a href="#parsing-main-inforeign" title="insertion mode: in foreign content">in foreign
1.336 mike 7591: content</a>", but there is no element <a href="#has-an-element-in-scope" title="has an
7592: element in scope">in scope</a> that has a namespace other than
1.724 mike 7593: the <a href="infrastructure.html#html-namespace-0">HTML namespace</a>, switch the <a href="#insertion-mode">insertion
1.1 mike 7594: mode</a> to the <a href="#secondary-insertion-mode">secondary insertion mode</a>.</p>
7595:
7596: </dd>
7597:
7598: <dt>A start tag whose tag name is one of: <!--"a",--> "b", "big",
7599: "blockquote", "body"<!--by inspection-->, "br", "center", "code",
1.422 mike 7600: "dd", "div", "dl", "dt"<!-- so that dd and dt can be handled
7601: uniformly throughout the parser -->, "em", "embed", "h1", "h2",
7602: "h3", "h4"<!--for completeness-->, "h5", "h6"<!--for
1.1 mike 7603: completeness-->, "head"<!--by inspection-->, "hr", "i", "img",
7604: "li", "listing"<!-- so that pre and listing can be handled
7605: uniformly throughout the parser -->, "menu", "meta", "nobr",
7606: "ol"<!-- so that dl, ul, and ol can be handled uniformly throughout
7607: the parser -->, "p", "pre", "ruby", "s", <!--"script",--> "small",
7608: "span", "strong", "strike"<!-- so that s and strike can be handled
7609: uniformly throughout the parser -->, <!--"style",--> "sub", "sup",
1.305 mike 7610: "table"<!--by inspection-->, "tt", "u", "ul", "var"</dt> <!-- this
7611: list was determined empirically by studying over 6,000,000,000
1.422 mike 7612: pages that were specifically not XML pages -->
7613: <dt>A start tag whose tag name is "font", if the token has any
7614: attributes named "color", "face", or "size"</dt> <!-- the
7615: attributes here are required so that SVG <font> will go through as
7616: SVG but legacy <font>s won't -->
7617: <dt>An end-of-file token</dt> <dd>
1.1 mike 7618:
7619: <p><a href="#parse-error">Parse error</a>.</p>
7620:
7621: <p>Pop elements from the <a href="#stack-of-open-elements">stack of open elements</a> until
1.857 mike 7622: either a <code><a href="the-canvas-element.html#math">math</a></code> element or an <code><a href="the-canvas-element.html#svg">svg</a></code> element
7623: has been popped from the stack, and reprocess the token.</p>
1.1 mike 7624:
7625: </dd>
7626:
7627: <dt>Any other start tag</dt>
7628: <dd>
7629:
7630: <p>If the <a href="#current-node">current node</a> is an element in the
1.724 mike 7631: <a href="infrastructure.html#mathml-namespace">MathML namespace</a>, <a href="#adjust-mathml-attributes">adjust MathML
1.1 mike 7632: attributes</a> for the token. (This fixes the case of MathML
7633: attributes that are not all lowercase.)</p>
7634:
1.724 mike 7635: <p>If the <a href="#current-node">current node</a> is an element in the <a href="infrastructure.html#svg-namespace">SVG
1.1 mike 7636: namespace</a>, and the token's tag name is one of the ones in
7637: the first column of the following table, change the tag name to
7638: the name given in the corresponding cell in the second
7639: column. (This fixes the case of SVG elements that are not all
7640: lowercase.)</p>
7641:
7642: <table><thead><tr><th> Tag name </th><th> Element name
7643: </th></tr></thead><tbody><tr><td> <code title="">altglyph</code> </td><td> <code title="">altGlyph</code>
7644: </td></tr><tr><td> <code title="">altglyphdef</code> </td><td> <code title="">altGlyphDef</code>
7645: </td></tr><tr><td> <code title="">altglyphitem</code> </td><td> <code title="">altGlyphItem</code>
7646: </td></tr><tr><td> <code title="">animatecolor</code> </td><td> <code title="">animateColor</code>
7647: </td></tr><tr><td> <code title="">animatemotion</code> </td><td> <code title="">animateMotion</code>
7648: </td></tr><tr><td> <code title="">animatetransform</code> </td><td> <code title="">animateTransform</code>
7649: </td></tr><tr><td> <code title="">clippath</code> </td><td> <code title="">clipPath</code>
7650: </td></tr><tr><td> <code title="">feblend</code> </td><td> <code title="">feBlend</code>
7651: </td></tr><tr><td> <code title="">fecolormatrix</code> </td><td> <code title="">feColorMatrix</code>
7652: </td></tr><tr><td> <code title="">fecomponenttransfer</code> </td><td> <code title="">feComponentTransfer</code>
7653: </td></tr><tr><td> <code title="">fecomposite</code> </td><td> <code title="">feComposite</code>
7654: </td></tr><tr><td> <code title="">feconvolvematrix</code> </td><td> <code title="">feConvolveMatrix</code>
7655: </td></tr><tr><td> <code title="">fediffuselighting</code> </td><td> <code title="">feDiffuseLighting</code>
7656: </td></tr><tr><td> <code title="">fedisplacementmap</code> </td><td> <code title="">feDisplacementMap</code>
7657: </td></tr><tr><td> <code title="">fedistantlight</code> </td><td> <code title="">feDistantLight</code>
7658: </td></tr><tr><td> <code title="">feflood</code> </td><td> <code title="">feFlood</code>
7659: </td></tr><tr><td> <code title="">fefunca</code> </td><td> <code title="">feFuncA</code>
7660: </td></tr><tr><td> <code title="">fefuncb</code> </td><td> <code title="">feFuncB</code>
7661: </td></tr><tr><td> <code title="">fefuncg</code> </td><td> <code title="">feFuncG</code>
7662: </td></tr><tr><td> <code title="">fefuncr</code> </td><td> <code title="">feFuncR</code>
7663: </td></tr><tr><td> <code title="">fegaussianblur</code> </td><td> <code title="">feGaussianBlur</code>
7664: </td></tr><tr><td> <code title="">feimage</code> </td><td> <code title="">feImage</code>
7665: </td></tr><tr><td> <code title="">femerge</code> </td><td> <code title="">feMerge</code>
7666: </td></tr><tr><td> <code title="">femergenode</code> </td><td> <code title="">feMergeNode</code>
7667: </td></tr><tr><td> <code title="">femorphology</code> </td><td> <code title="">feMorphology</code>
7668: </td></tr><tr><td> <code title="">feoffset</code> </td><td> <code title="">feOffset</code>
7669: </td></tr><tr><td> <code title="">fepointlight</code> </td><td> <code title="">fePointLight</code>
7670: </td></tr><tr><td> <code title="">fespecularlighting</code> </td><td> <code title="">feSpecularLighting</code>
7671: </td></tr><tr><td> <code title="">fespotlight</code> </td><td> <code title="">feSpotLight</code>
7672: </td></tr><tr><td> <code title="">fetile</code> </td><td> <code title="">feTile</code>
7673: </td></tr><tr><td> <code title="">feturbulence</code> </td><td> <code title="">feTurbulence</code>
7674: </td></tr><tr><td> <code title="">foreignobject</code> </td><td> <code title="">foreignObject</code>
7675: </td></tr><tr><td> <code title="">glyphref</code> </td><td> <code title="">glyphRef</code>
7676: </td></tr><tr><td> <code title="">lineargradient</code> </td><td> <code title="">linearGradient</code>
7677: </td></tr><tr><td> <code title="">radialgradient</code> </td><td> <code title="">radialGradient</code>
7678: <!--<tr> <td> <code title="">solidcolor</code> <td> <code title="">solidColor</code> (SVG 1.2)-->
7679: </td></tr><tr><td> <code title="">textpath</code> </td><td> <code title="">textPath</code>
1.724 mike 7680: </td></tr></tbody></table><p>If the <a href="#current-node">current node</a> is an element in the <a href="infrastructure.html#svg-namespace">SVG
1.1 mike 7681: namespace</a>, <a href="#adjust-svg-attributes">adjust SVG attributes</a> for the
7682: token. (This fixes the case of SVG attributes that are not all
7683: lowercase.)</p>
7684:
7685: <p><a href="#adjust-foreign-attributes">Adjust foreign attributes</a> for the token. (This
7686: fixes the use of namespaced attributes, in particular XLink in
7687: SVG.)</p>
7688:
7689: <p><a href="#insert-a-foreign-element">Insert a foreign element</a> for the token, in the
7690: same namespace as the <a href="#current-node">current node</a>.</p>
7691:
7692: <p>If the token has its <i>self-closing flag</i> set, pop the
7693: <a href="#current-node">current node</a> off the <a href="#stack-of-open-elements">stack of open
7694: elements</a> and <a href="#acknowledge-self-closing-flag" title="acknowledge self-closing
7695: flag">acknowledge the token's <i>self-closing flag</i></a>.</p>
7696:
7697: </dd>
7698:
1.755 mike 7699: </dl><h5 id="parsing-main-afterbody"><span class="secno">8.2.5.22 </span>The "<dfn title="insertion mode: after body">after body</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7700:
7701: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-afterbody" title="insertion
7702: mode: after body">after body</a>", tokens must be handled as follows:</p>
7703:
7704: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7705: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
1.882 mike 7706: U+000D CARRIAGE RETURN (CR), or U+0020 SPACE</dt>
1.1 mike 7707: <dd>
7708: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7709: mode</a>.</p>
7710: </dd>
7711:
7712: <dt>A comment token</dt>
7713: <dd>
1.882 mike 7714: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the first element in
1.159 mike 7715: the <a href="#stack-of-open-elements">stack of open elements</a> (the <code><a href="semantics.html#the-html-element-0">html</a></code>
1.1 mike 7716: element), with the <code title="">data</code> attribute set to
7717: the data given in the comment token.</p>
7718: </dd>
7719:
7720: <dt>A DOCTYPE token</dt>
7721: <dd>
7722: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7723: </dd>
7724:
7725: <dt>A start tag whose tag name is "html"</dt>
7726: <dd>
7727: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7728: mode</a>.</p>
7729: </dd>
7730:
7731: <dt>An end tag whose tag name is "html"</dt>
7732: <dd>
7733:
7734: <p>If the parser was originally created as part of the <a href="#html-fragment-parsing-algorithm">HTML
7735: fragment parsing algorithm</a>, this is a <a href="#parse-error">parse
7736: error</a>; ignore the token. (<a href="#fragment-case">fragment case</a>)</p>
7737:
7738: <p>Otherwise, switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#the-after-after-body-insertion-mode" title="insertion mode: after after body">after after
7739: body</a>".</p>
7740:
7741: </dd>
7742:
7743: <dt>An end-of-file token</dt>
7744: <dd>
7745: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7746: </dd>
7747:
7748: <dt>Anything else</dt>
7749: <dd>
7750:
7751: <p><a href="#parse-error">Parse error</a>. Switch the <a href="#insertion-mode">insertion
7752: mode</a> to "<a href="#parsing-main-inbody" title="insertion mode: in body">in
7753: body</a>" and reprocess the token.</p>
7754:
7755: </dd>
7756:
1.755 mike 7757: </dl><h5 id="parsing-main-inframeset"><span class="secno">8.2.5.23 </span>The "<dfn title="insertion mode: in frameset">in frameset</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7758:
7759: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inframeset" title="insertion
7760: mode: in frameset">in frameset</a>", tokens must be handled as follows:</p>
7761:
7762: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7763: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
1.882 mike 7764: U+000D CARRIAGE RETURN (CR), or U+0020 SPACE</dt>
1.1 mike 7765: <dd>
7766: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
7767: the <a href="#current-node">current node</a>.</p>
7768: </dd>
7769:
7770: <dt>A comment token</dt>
7771: <dd>
1.882 mike 7772: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the <a href="#current-node">current
1.1 mike 7773: node</a> with the <code title="">data</code> attribute set to
7774: the data given in the comment token.</p>
7775: </dd>
7776:
7777: <dt>A DOCTYPE token</dt>
7778: <dd>
7779: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7780: </dd>
7781:
7782: <dt>A start tag whose tag name is "html"</dt>
7783: <dd>
7784: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7785: mode</a>.</p>
7786: </dd>
7787:
7788: <dt>A start tag whose tag name is "frameset"</dt>
7789: <dd>
7790: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.</p>
7791: </dd>
7792:
7793: <dt>An end tag whose tag name is "frameset"</dt>
7794: <dd>
7795:
7796: <p>If the <a href="#current-node">current node</a> is the root
1.159 mike 7797: <code><a href="semantics.html#the-html-element-0">html</a></code> element, then this is a <a href="#parse-error">parse
1.1 mike 7798: error</a>; ignore the token. (<a href="#fragment-case">fragment
7799: case</a>)</p>
7800:
7801: <p>Otherwise, pop the <a href="#current-node">current node</a> from the
7802: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7803:
7804: <p>If the parser was <em>not</em> originally created as part
7805: of the <a href="#html-fragment-parsing-algorithm">HTML fragment parsing algorithm</a>
7806: (<a href="#fragment-case">fragment case</a>), and the <a href="#current-node">current
1.5 mike 7807: node</a> is no longer a <code><a href="obsolete.html#frameset">frameset</a></code> element, then
1.1 mike 7808: switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#parsing-main-afterframeset" title="insertion mode: after frameset">after
7809: frameset</a>".</p>
7810:
7811: </dd>
7812:
7813: <dt>A start tag whose tag name is "frame"</dt>
7814: <dd>
7815:
7816: <p><a href="#insert-an-html-element">Insert an HTML element</a> for the token.
7817: Immediately pop the <a href="#current-node">current node</a> off the
7818: <a href="#stack-of-open-elements">stack of open elements</a>.</p>
7819:
7820: <p><a href="#acknowledge-self-closing-flag" title="acknowledge self-closing flag">Acknowledge the
7821: token's <i>self-closing flag</i></a>, if it is set.</p>
7822:
7823: </dd>
7824:
7825: <dt>A start tag whose tag name is "noframes"</dt>
7826: <dd>
7827: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
7828: mode</a>.</p>
7829: </dd>
7830:
7831: <dt>An end-of-file token</dt>
7832: <dd>
7833:
7834: <p>If the <a href="#current-node">current node</a> is not the root
1.159 mike 7835: <code><a href="semantics.html#the-html-element-0">html</a></code> element, then this is a <a href="#parse-error">parse
1.1 mike 7836: error</a>.</p>
7837:
7838: <p class="note">It can only be the <a href="#current-node">current node</a> in
7839: the <a href="#fragment-case">fragment case</a>.</p>
7840:
7841: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7842:
7843: </dd>
7844:
7845: <dt>Anything else</dt>
7846: <dd>
7847: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7848: </dd>
7849:
1.755 mike 7850: </dl><h5 id="parsing-main-afterframeset"><span class="secno">8.2.5.24 </span>The "<dfn title="insertion mode: after frameset">after frameset</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7851:
7852: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-afterframeset" title="insertion
7853: mode: after frameset">after frameset</a>", tokens must be handled as follows:</p>
7854:
7855: <!-- due to rules in the "in frameset" mode, this can't be entered in the fragment case -->
7856: <dl class="switch"><dt>A character token that is one of U+0009 CHARACTER
7857: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
1.882 mike 7858: U+000D CARRIAGE RETURN (CR), or U+0020 SPACE</dt>
1.1 mike 7859: <dd>
7860: <p><a href="#insert-a-character" title="insert a character">Insert the character</a> into
7861: the <a href="#current-node">current node</a>.</p>
7862: </dd>
7863:
7864: <dt>A comment token</dt>
7865: <dd>
1.882 mike 7866: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the <a href="#current-node">current
1.1 mike 7867: node</a> with the <code title="">data</code> attribute set to
7868: the data given in the comment token.</p>
7869: </dd>
7870:
7871: <dt>A DOCTYPE token</dt>
7872: <dd>
7873: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7874: </dd>
7875:
7876: <dt>A start tag whose tag name is "html"</dt>
7877: <dd>
7878: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7879: mode</a>.</p>
7880: </dd>
7881:
7882: <dt>An end tag whose tag name is "html"</dt>
7883: <dd>
7884: <p>Switch the <a href="#insertion-mode">insertion mode</a> to "<a href="#the-after-after-frameset-insertion-mode" title="insertion mode: after after frameset">after after
7885: frameset</a>".</p>
7886: </dd>
7887:
7888: <dt>A start tag whose tag name is "noframes"</dt>
7889: <dd>
7890: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
7891: mode</a>.</p>
7892: </dd>
7893:
7894: <dt>An end-of-file token</dt>
7895: <dd>
7896: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7897: </dd>
7898:
7899: <dt>Anything else</dt>
7900: <dd>
7901: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7902: </dd>
7903:
1.755 mike 7904: </dl><h5 id="the-after-after-body-insertion-mode"><span class="secno">8.2.5.25 </span>The "<dfn title="insertion mode: after after body">after after body</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7905:
7906: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-after-body-insertion-mode" title="insertion
7907: mode: after after body">after after body</a>", tokens must be handled as follows:</p>
7908:
7909: <dl class="switch"><dt>A comment token</dt>
7910: <dd>
1.882 mike 7911: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the <code><a href="infrastructure.html#document">Document</a></code>
1.1 mike 7912: object with the <code title="">data</code> attribute set to the
7913: data given in the comment token.</p>
7914: </dd>
7915:
7916: <dt>A DOCTYPE token</dt>
7917: <dt>A character token that is one of U+0009 CHARACTER
7918: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
1.882 mike 7919: U+000D CARRIAGE RETURN (CR), or U+0020 SPACE</dt>
1.1 mike 7920: <dt>A start tag whose tag name is "html"</dt>
7921: <dd>
7922: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7923: mode</a>.</p>
7924: </dd>
7925:
7926: <dt>An end-of-file token</dt>
7927: <dd>
7928: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7929: </dd>
7930:
7931: <dt>Anything else</dt>
7932: <dd>
7933: <p><a href="#parse-error">Parse error</a>. Switch the <a href="#insertion-mode">insertion mode</a>
7934: to "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" and
7935: reprocess the token.</p>
7936: </dd>
7937:
1.755 mike 7938: </dl><h5 id="the-after-after-frameset-insertion-mode"><span class="secno">8.2.5.26 </span>The "<dfn title="insertion mode: after after frameset">after after frameset</dfn>" insertion mode</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7939:
7940: <p>When the <a href="#insertion-mode">insertion mode</a> is "<a href="#the-after-after-frameset-insertion-mode" title="insertion
7941: mode: after after frameset">after after frameset</a>", tokens must be handled as follows:</p>
7942:
7943: <dl class="switch"><dt>A comment token</dt>
7944: <dd>
1.882 mike 7945: <p>Append a <code><a href="infrastructure.html#comment-0">Comment</a></code> node to the <code><a href="infrastructure.html#document">Document</a></code>
1.1 mike 7946: object with the <code title="">data</code> attribute set to the
7947: data given in the comment token.</p>
7948: </dd>
7949:
7950: <dt>A DOCTYPE token</dt>
7951: <dt>A character token that is one of U+0009 CHARACTER
7952: TABULATION, U+000A LINE FEED (LF), U+000C FORM FEED (FF),
1.882 mike 7953: U+000D CARRIAGE RETURN (CR), or U+0020 SPACE</dt>
1.1 mike 7954: <dt>A start tag whose tag name is "html"</dt>
7955: <dd>
7956: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>" <a href="#insertion-mode">insertion
7957: mode</a>.</p>
7958: </dd>
7959:
7960: <dt>An end-of-file token</dt>
7961: <dd>
7962: <p><a href="#stop-parsing">Stop parsing</a>.</p>
7963: </dd>
7964:
7965: <dt>A start tag whose tag name is "noframes"</dt>
7966: <dd>
7967: <p>Process the token <a href="#using-the-rules-for">using the rules for</a> the "<a href="#parsing-main-inhead" title="insertion mode: in head">in head</a>" <a href="#insertion-mode">insertion
7968: mode</a>.</p>
7969: </dd>
7970:
7971: <dt>Anything else</dt>
7972: <dd>
7973: <p><a href="#parse-error">Parse error</a>. Ignore the token.</p>
7974: </dd>
7975:
1.266 mike 7976: </dl></div><div class="impl">
7977:
1.755 mike 7978: <h4 id="the-end"><span class="secno">8.2.6 </span>The end</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 7979:
7980: <p>Once the user agent <dfn id="stop-parsing" title="stop parsing">stops parsing</dfn>
1.484 mike 7981: the document, the user agent must run the following steps:</p>
1.1 mike 7982:
1.484 mike 7983: <ol><!-- this happens as part of one of the tasks that runs the parser --><li><p>Set the <a href="dom.html#current-document-readiness">current document readiness</a> to
7984: "interactive" <!-- this also synchronously fires an event --> and
7985: the <a href="#insertion-point">insertion point</a> to undefined.</p></li>
7986:
1.838 mike 7987: <li><p>Pop <em>all</em> the nodes off the <a href="#stack-of-open-elements">stack of open
7988: elements</a>.</p></li>
7989:
1.484 mike 7990: <li><p>If the <a href="semantics.html#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing">list of scripts that will execute when the
7991: document has finished parsing</a> is not empty, run these
7992: substeps:</p>
7993:
1.794 mike 7994: <ol><li><p><a href="webappapis.html#spin-the-event-loop">Spin the event loop</a> until the first
1.484 mike 7995: <code><a href="semantics.html#script">script</a></code> in the <a href="semantics.html#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing">list of scripts that will
7996: execute when the document has finished parsing</a> has its
7997: <a href="semantics.html#ready-to-be-parser-executed">"ready to be parser-executed"</a> flag set <em>and</em> there
7998: is no <a href="semantics.html#a-style-sheet-blocking-scripts" title="a style sheet blocking scripts">style sheet
7999: blocking scripts</a>.</p></li>
8000:
8001: <li><p><a href="semantics.html#executing-a-script-block" title="executing a script block">Execute</a> the
8002: first <code><a href="semantics.html#script">script</a></code> in the <a href="semantics.html#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing">list of scripts that will
8003: execute when the document has finished parsing</a>.</p></li>
8004:
8005: <li><p>Remove the first <code><a href="semantics.html#script">script</a></code> element from the
8006: <a href="semantics.html#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing">list of scripts that will execute when the document has
8007: finished parsing</a> (i.e. shift out the first entry in the
8008: list).</p></li>
8009:
8010: <li><p>If the <a href="semantics.html#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing">list of scripts that will execute when the
8011: document has finished parsing</a> is still not empty, repeat
8012: these substeps again from substep 1.</p>
8013:
8014: </li></ol></li>
8015:
1.794 mike 8016: <li><p><a href="webappapis.html#queue-a-task">Queue a task</a> to <a href="webappapis.html#fire-a-simple-event">fire a simple
1.484 mike 8017: event</a> named <code title="event-DOMContentLoaded">DOMContentLoaded</code> at the
1.810 mike 8018: <code><a href="infrastructure.html#document">Document</a></code>.</p></li>
1.484 mike 8019:
1.879 mike 8020: <li><p><a href="webappapis.html#spin-the-event-loop">Spin the event loop</a> until the <a href="semantics.html#set-of-scripts-that-will-execute-as-soon-as-possible">set of
1.877 mike 8021: scripts that will execute as soon as possible</a> is
8022: empty.</p></li> <!-- this step is redundant with the next one,
8023: really, since all those scripts also delay the load event. It's
8024: here in case we add an event between this step and the next or if
8025: we move the previous step (DOMContentLoaded) down again. -->
8026:
1.794 mike 8027: <li><p><a href="webappapis.html#spin-the-event-loop">Spin the event loop</a> until there is nothing that
1.484 mike 8028: <dfn id="delay-the-load-event" title="delay the load event">delays the load event</dfn> in
1.810 mike 8029: the <code><a href="infrastructure.html#document">Document</a></code>.</p></li>
1.484 mike 8030:
1.794 mike 8031: <li><p><a href="webappapis.html#queue-a-task">Queue a task</a> to set the <a href="dom.html#current-document-readiness">current document
1.484 mike 8032: readiness</a> to "complete". <!-- this also fires an event
8033: synchronously during the task --></p></li>
1.1 mike 8034:
1.810 mike 8035: <li><p>If the <code><a href="infrastructure.html#document">Document</a></code> is in a <a href="browsers.html#browsing-context">browsing
1.794 mike 8036: context</a>, then <a href="webappapis.html#queue-a-task">queue a task</a> to <a href="webappapis.html#fire-a-simple-event">fire a
1.460 mike 8037: simple event</a> named <code title="event-load">load</code> at
1.810 mike 8038: the <code><a href="infrastructure.html#document">Document</a></code>'s <code><a href="browsers.html#window">Window</a></code> object, but with
1.882 mike 8039: its <code title="dom-event-target"><a href="infrastructure.html#dom-event-target">target</a></code> set to the
1.810 mike 8040: <code><a href="infrastructure.html#document">Document</a></code> object (and the <code title="dom-event-currentTarget">currentTarget</code> set to the
1.484 mike 8041: <code><a href="browsers.html#window">Window</a></code> object).</p></li>
1.1 mike 8042:
1.810 mike 8043: <li><p>If the <code><a href="infrastructure.html#document">Document</a></code> is in a <a href="browsers.html#browsing-context">browsing
1.852 mike 8044: context</a>, then <a href="webappapis.html#queue-a-task">queue a task</a> to fire a <code title="event-pageshow"><a href="history.html#event-pageshow">pageshow</a></code> event at the
8045: <code><a href="browsers.html#window">Window</a></code> object of the <code><a href="infrastructure.html#document">Document</a></code>, but with
1.882 mike 8046: its <code title="dom-event-target"><a href="infrastructure.html#dom-event-target">target</a></code> set to the
1.852 mike 8047: <code><a href="infrastructure.html#document">Document</a></code> object (and the <code title="dom-event-currentTarget">currentTarget</code> set to the
8048: <code><a href="browsers.html#window">Window</a></code> object), using the
8049: <code><a href="history.html#pagetransitionevent">PageTransitionEvent</a></code> interface, with the <code title="dom-PageTransitionEvent-persisted"><a href="history.html#dom-pagetransitionevent-persisted">persisted</a></code>
8050: attribute set to false. This event must not bubble, must not be
8051: cancelable, and has no default action.</p></li>
1.569 mike 8052:
1.810 mike 8053: <li><p>If the <code><a href="infrastructure.html#document">Document</a></code> has a <a href="history.html#pending-state-object">pending state
1.794 mike 8054: object</a>, then <a href="webappapis.html#queue-a-task">queue a task</a> to fire a <code title="event-popstate"><a href="history.html#event-popstate">popstate</a></code> event at the
1.810 mike 8055: <code><a href="infrastructure.html#document">Document</a></code>'s <code><a href="browsers.html#window">Window</a></code> object using the
1.1 mike 8056: <code><a href="history.html#popstateevent">PopStateEvent</a></code> interface, with the <code title="dom-PopStateEvent-state"><a href="history.html#dom-popstateevent-state">state</a></code> attribute set to the
8057: current value of the <a href="history.html#pending-state-object">pending state object</a>. This event
1.484 mike 8058: must bubble but not be cancelable and has no default
8059: action.</p></li>
1.1 mike 8060:
1.810 mike 8061: <li><p>If the <code><a href="infrastructure.html#document">Document</a></code> has any <a href="offline.html#pending-application-cache-download-process-tasks">pending
1.794 mike 8062: application cache download process tasks</a>, then <a href="webappapis.html#queue-a-task" title="queue a task">queue</a> each such <a href="webappapis.html#concept-task" title="concept-task">task</a> in the order they were added to
1.725 mike 8063: the list of <a href="offline.html#pending-application-cache-download-process-tasks">pending application cache download process
8064: tasks</a>, and then empty the list of <a href="offline.html#pending-application-cache-download-process-tasks">pending application
1.794 mike 8065: cache download process tasks</a>. The <a href="webappapis.html#task-source">task source</a>
8066: for these <a href="webappapis.html#concept-task" title="concept-task">tasks</a> is the
8067: <a href="webappapis.html#networking-task-source">networking task source</a>.</p></li>
1.725 mike 8068:
1.810 mike 8069: <li><p>The <code><a href="infrastructure.html#document">Document</a></code> is now <dfn id="completely-loaded">completely
1.725 mike 8070: loaded</dfn>.</p></li>
8071:
1.838 mike 8072: </ol><p>When the user agent is to <dfn id="abort-an-html-parser">abort an HTML parser</dfn>, it
8073: must run the following steps:</p>
8074:
8075: <ol><li><p>Throw away any pending content in the <a href="#the-input-stream">input
8076: stream</a>, and discard any future content that would have been
8077: added to it.</p></li>
8078:
8079: <li><p>Pop <em>all</em> the nodes off the <a href="#stack-of-open-elements">stack of open
8080: elements</a>.</p></li>
8081:
8082: <!-- anything else? this is things that happen when you call
8083: document.open() on a document that's still being parsed. Should the
8084: pending scripts be blown away or anything? -->
8085:
1.794 mike 8086: </ol><p>Except where otherwise specified, the <a href="webappapis.html#task-source">task source</a>
8087: for the <a href="webappapis.html#concept-task" title="concept-task">tasks</a> mentioned in this
8088: section is the <a href="webappapis.html#dom-manipulation-task-source">DOM manipulation task source</a>.</p>
1.1 mike 8089:
1.266 mike 8090: </div><div class="impl">
1.1 mike 8091:
1.755 mike 8092: <h4 id="coercing-an-html-dom-into-an-infoset"><span class="secno">8.2.7 </span>Coercing an HTML DOM into an infoset</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 8093:
8094: <p>When an application uses an <a href="#html-parser">HTML parser</a> in
8095: conjunction with an XML pipeline, it is possible that the
8096: constructed DOM is not compatible with the XML tool chain in certain
8097: subtle ways. For example, an XML toolchain might not be able to
8098: represent attributes with the name <code title="">xmlns</code>,
8099: since they conflict with the Namespaces in XML syntax. There is also
8100: some data that the <a href="#html-parser">HTML parser</a> generates that isn't
8101: included in the DOM itself. This section specifies some rules for
8102: handling these issues.</p>
8103:
8104: <p>If the XML API being used doesn't support DOCTYPEs, the tool may
8105: drop DOCTYPEs altogether.</p>
8106:
8107: <p>If the XML API doesn't support attributes in no namespace that
8108: are named "<code title="">xmlns</code>", attributes whose names
8109: start with "<code title="">xmlns:</code>", or attributes in the
1.724 mike 8110: <a href="infrastructure.html#xmlns-namespace">XMLNS namespace</a>, then the tool may drop such
1.1 mike 8111: attributes.</p>
8112:
8113: <p>The tool may annotate the output with any namespace declarations
8114: required for proper operation.</p>
8115:
8116: <p>If the XML API being used restricts the allowable characters in
8117: the local names of elements and attributes, then the tool may map
8118: all element and attribute local names that the API wouldn't support
8119: to a set of names that <em>are</em> allowed, by replacing any
8120: character that isn't supported with the uppercase letter U and the
8121: six digits of the character's Unicode code point when expressed in
8122: hexadecimal, using digits 0-9 and capital letters A-F as the
8123: symbols, in increasing numeric order.</p>
8124:
8125: <p class="example">For example, the element name <code title="">foo<bar</code>, which can be output by the <a href="#html-parser">HTML
8126: parser</a>, though it is neither a legal HTML element name nor a
8127: well-formed XML element name, would be converted into <code title="">fooU00003Cbar</code>, which <em>is</em> a well-formed XML
8128: element name (though it's still not legal in HTML by any means).</p>
8129:
8130: <p class="example">As another example, consider the attribute
8131: <code>xlink:href</code>. Used on a MathML element, it becomes, after
8132: being <a href="#adjust-foreign-attributes" title="adjust foreign attributes">adjusted</a>, an
8133: attribute with a prefix "<code title="">xlink</code>" and a local
8134: name "<code title="">href</code>". However, used on an HTML element,
8135: it becomes an attribute with no prefix and the local name "<code title="">xlink:href</code>", which is not a valid NCName, and thus
8136: might not be accepted by an XML API. It could thus get converted,
8137: becoming "<code title="">xlinkU00003Ahref</code>".</p>
8138:
8139: <p class="note">The resulting names from this conversion
8140: conveniently can't clash with any attribute generated by the
8141: <a href="#html-parser">HTML parser</a>, since those are all either lowercase or
8142: those listed in the <a href="#adjust-foreign-attributes">adjust foreign attributes</a>
8143: algorithm's table.</p>
8144:
8145: <p>If the XML API restricts comments from having two consecutive
8146: U+002D HYPHEN-MINUS characters (--), the tool may insert a single
8147: U+0020 SPACE character between any such offending characters.</p>
8148:
8149: <p>If the XML API restricts comments from ending in a
8150: U+002D HYPHEN-MINUS character (-), the tool may insert a single
8151: U+0020 SPACE character at the end of such comments.</p>
8152:
8153: <p>If the XML API restricts allowed characters in character data,
1.439 mike 8154: attribute values, or comments, the tool may replace any U+000C FORM
8155: FEED (FF) character with a U+0020 SPACE character, and any other
8156: literal non-XML character with a U+FFFD REPLACEMENT CHARACTER.</p>
1.1 mike 8157:
8158: <p>If the tool has no way to convey out-of-band information, then
8159: the tool may drop the following information:</p>
8160:
1.880 mike 8161: <ul><li>Whether the document is set to <i><a href="dom.html#no-quirks-mode">no-quirks mode</a></i>,
8162: <i><a href="dom.html#limited-quirks-mode">limited-quirks mode</a></i>, or <i><a href="dom.html#quirks-mode">quirks mode</a></i></li>
1.1 mike 8163:
8164: <li>The association between form controls and forms that aren't
8165: their nearest <code><a href="forms.html#the-form-element">form</a></code> element ancestor (use of the
8166: <a href="#form-element-pointer"><code>form</code> element pointer</a> in the parser)</li>
8167:
8168: </ul><p class="note">The mutations allowed by this section apply
8169: <em>after</em> the <a href="#html-parser">HTML parser</a>'s rules have been
8170: applied. For example, a <code title=""><a::></code> start tag
8171: will be closed by a <code title=""></a::></code> end tag, and
8172: never by a <code title=""></aU00003AU00003A></code> end tag, even
8173: if the user agent is using the rules above to then generate an
8174: actual element in the DOM with the name <code title="">aU00003AU00003A</code> for that start tag.</p>
8175:
1.266 mike 8176: </div><div class="impl">
1.1 mike 8177:
1.755 mike 8178: <h4 id="an-introduction-to-error-handling-and-strange-cases-in-the-parser"><span class="secno">8.2.8 </span>An introduction to error handling and strange cases in the parser</h4><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 8179:
8180: <p><i>This section is non-normative.</i></p>
8181:
8182: <p>This section examines some erroneous markup and discusses how
8183: the <a href="#html-parser">HTML parser</a> handles these cases.</p>
8184:
8185:
1.755 mike 8186: <h5 id="misnested-tags:-b-i-b-i"><span class="secno">8.2.8.1 </span>Misnested tags: <b><i></b></i></h5>
1.1 mike 8187:
8188: <p><i>This section is non-normative.</i></p>
8189:
8190: <p>The most-often discussed example of erroneous markup is as
8191: follows:</p>
8192:
8193: <pre><p>1<b>2<i>3</b>4</i>5</p></pre>
8194:
8195: <p>The parsing of this markup is straightforward up to the "3". At
8196: this point, the DOM looks like this:</p>
8197:
1.159 mike 8198: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="semantics.html#the-p-element">p</a></code><ul><li class="t3"><code>#text</code>: <span title="">1</span></li><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">2</span></li><li class="t1"><code><a href="text-level-semantics.html#the-i-element">i</a></code><ul><li class="t3"><code>#text</code>: <span title="">3</span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul><p>Here, the <a href="#stack-of-open-elements">stack of open elements</a> has five elements
8199: on it: <code><a href="semantics.html#the-html-element-0">html</a></code>, <code><a href="semantics.html#the-body-element-0">body</a></code>, <code><a href="semantics.html#the-p-element">p</a></code>,
1.1 mike 8200: <code><a href="text-level-semantics.html#the-b-element">b</a></code>, and <code><a href="text-level-semantics.html#the-i-element">i</a></code>. The <a href="#list-of-active-formatting-elements">list of active
8201: formatting elements</a> just has two: <code><a href="text-level-semantics.html#the-b-element">b</a></code> and
8202: <code><a href="text-level-semantics.html#the-i-element">i</a></code>. The <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>".</p>
8203:
8204: <p>Upon receiving the end tag token with the tag name "b", the "<a href="#adoptionAgency">adoption agency algorithm</a>" is
8205: invoked. This is a simple case, in that the <var title="">formatting
8206: element</var> is the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element, and there is no
8207: <var title="">furthest block</var>. Thus, the <a href="#stack-of-open-elements">stack of open
1.159 mike 8208: elements</a> ends up with just three elements: <code><a href="semantics.html#the-html-element-0">html</a></code>,
8209: <code><a href="semantics.html#the-body-element-0">body</a></code>, and <code><a href="semantics.html#the-p-element">p</a></code>, while the <a href="#list-of-active-formatting-elements">list of
1.1 mike 8210: active formatting elements</a> has just one: <code><a href="text-level-semantics.html#the-i-element">i</a></code>. The
8211: DOM tree is unmodified at this point.</p>
8212:
8213: <p>The next token is a character ("4"), triggers the <a href="#reconstruct-the-active-formatting-elements" title="reconstruct the active formatting elements">reconstruction of
8214: the active formatting elements</a>, in this case just the
8215: <code><a href="text-level-semantics.html#the-i-element">i</a></code> element. A new <code><a href="text-level-semantics.html#the-i-element">i</a></code> element is thus created
8216: for the "4" text node. After the end tag token for the "i" is also
8217: received, and the "5" text node is inserted, the DOM looks as
8218: follows:</p>
8219:
1.755 mike 8220: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="semantics.html#the-p-element">p</a></code><ul><li class="t3"><code>#text</code>: <span title="">1</span></li><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">2</span></li><li class="t1"><code><a href="text-level-semantics.html#the-i-element">i</a></code><ul><li class="t3"><code>#text</code>: <span title="">3</span></li></ul></li></ul></li><li class="t1"><code><a href="text-level-semantics.html#the-i-element">i</a></code><ul><li class="t3"><code>#text</code>: <span title="">4</span></li></ul></li><li class="t3"><code>#text</code>: <span title="">5</span></li></ul></li></ul></li></ul></li></ul><h5 id="misnested-tags:-b-p-b-p"><span class="secno">8.2.8.2 </span>Misnested tags: <b><p></b></p></h5>
1.1 mike 8221:
8222: <p><i>This section is non-normative.</i></p>
8223:
8224: <p>A case similar to the previous one is the following:</p>
8225:
8226: <pre><b>1<p>2</b>3</p></pre>
8227:
8228: <p>Up to the "2" the parsing here is straightforward:</p>
8229:
1.159 mike 8230: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">1</span></li><li class="t1"><code><a href="semantics.html#the-p-element">p</a></code><ul><li class="t3"><code>#text</code>: <span title="">2</span></li></ul></li></ul></li></ul></li></ul></li></ul><p>The interesting part is when the end tag token with the tag name
1.1 mike 8231: "b" is parsed.</p>
8232:
8233: <p>Before that token is seen, the <a href="#stack-of-open-elements">stack of open
1.159 mike 8234: elements</a> has four elements on it: <code><a href="semantics.html#the-html-element-0">html</a></code>,
8235: <code><a href="semantics.html#the-body-element-0">body</a></code>, <code><a href="text-level-semantics.html#the-b-element">b</a></code>, and <code><a href="semantics.html#the-p-element">p</a></code>. The
1.1 mike 8236: <a href="#list-of-active-formatting-elements">list of active formatting elements</a> just has the one:
8237: <code><a href="text-level-semantics.html#the-b-element">b</a></code>. The <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-inbody" title="insertion mode: in body">in body</a>".</p>
8238:
8239: <p>Upon receiving the end tag token with the tag name "b", the "<a href="#adoptionAgency">adoption agency algorithm</a>" is invoked, as
8240: in the previous example. However, in this case, there <em>is</em> a
8241: <var title="">furthest block</var>, namely the <code><a href="semantics.html#the-p-element">p</a></code> element. Thus,
8242: this time the adoption agency algorithm isn't skipped over.</p>
8243:
1.159 mike 8244: <p>The <var title="">common ancestor</var> is the <code><a href="semantics.html#the-body-element-0">body</a></code>
1.1 mike 8245: element. A conceptual "bookmark" marks the position of the
8246: <code><a href="text-level-semantics.html#the-b-element">b</a></code> in the <a href="#list-of-active-formatting-elements">list of active formatting
8247: elements</a>, but since that list has only one element in it,
8248: it won't have much effect.</p>
8249:
8250: <p>As the algorithm progresses, <var title="">node</var> ends up set
8251: to the formatting element (<code><a href="text-level-semantics.html#the-b-element">b</a></code>), and <var title="">last
8252: node</var> ends up set to the <var title="">furthest block</var>
8253: (<code><a href="semantics.html#the-p-element">p</a></code>).</p>
8254:
8255: <p>The <var title="">last node</var> gets appended (moved) to the
8256: <var title="">common ancestor</var>, so that the DOM looks like:</p>
8257:
1.159 mike 8258: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">1</span></li></ul></li><li class="t1"><code><a href="semantics.html#the-p-element">p</a></code><ul><li class="t3"><code>#text</code>: <span title="">2</span></li></ul></li></ul></li></ul></li></ul><p>A new <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created, and the children of the
1.1 mike 8259: <code><a href="semantics.html#the-p-element">p</a></code> element are moved to it:</p>
8260:
1.159 mike 8261: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">1</span></li></ul></li><li class="t1"><code><a href="semantics.html#the-p-element">p</a></code></li></ul></li></ul></li></ul><ul class="domTree"><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">2</span></li></ul></li></ul><p>Finally, the new <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is appended to the
1.1 mike 8262: <code><a href="semantics.html#the-p-element">p</a></code> element, so that the DOM looks like:</p>
8263:
1.159 mike 8264: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">1</span></li></ul></li><li class="t1"><code><a href="semantics.html#the-p-element">p</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">2</span></li></ul></li></ul></li></ul></li></ul></li></ul><p>The <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is removed from the <a href="#list-of-active-formatting-elements">list of
1.1 mike 8265: active formatting elements</a> and the <a href="#stack-of-open-elements">stack of open
8266: elements</a>, so that when the "3" is parsed, it is appended to
8267: the <code><a href="semantics.html#the-p-element">p</a></code> element:</p>
8268:
1.755 mike 8269: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">1</span></li></ul></li><li class="t1"><code><a href="semantics.html#the-p-element">p</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">2</span></li></ul></li><li class="t3"><code>#text</code>: <span title="">3</span></li></ul></li></ul></li></ul></li></ul><h5 id="unexpected-markup-in-tables"><span class="secno">8.2.8.3 </span>Unexpected markup in tables</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 8270:
8271: <p><i>This section is non-normative.</i></p>
8272:
8273: <p>Error handling in tables is, for historical reasons, especially
8274: strange. For example, consider the following markup:</p>
8275:
8276: <pre><table><strong><b></strong><tr><td>aaa</td></tr><strong>bbb</strong></table>ccc</pre>
8277:
8278: <p>The highlighted <code><a href="text-level-semantics.html#the-b-element">b</a></code> element start tag is not allowed
8279: directly inside a table like that, and the parser handles this case
8280: by placing the element <em>before</em> the table. (This is called <i title="foster parent"><a href="#foster-parent">foster parenting</a></i>.) This can be seen by
8281: examining the DOM tree as it stands just after the
8282: <code><a href="tabular-data.html#the-table-element">table</a></code> element's start tag has been seen:</p>
8283:
1.159 mike 8284: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code></li></ul></li></ul></li></ul><p>...and then immediately after the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element start
1.1 mike 8285: tag has been seen:</p>
8286:
1.159 mike 8287: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code></li><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code></li></ul></li></ul></li></ul><p>At this point, the <a href="#stack-of-open-elements">stack of open elements</a> has on it
8288: the elements <code><a href="semantics.html#the-html-element-0">html</a></code>, <code><a href="semantics.html#the-body-element-0">body</a></code>,
1.1 mike 8289: <code><a href="tabular-data.html#the-table-element">table</a></code>, and <code><a href="text-level-semantics.html#the-b-element">b</a></code> (in that order, despite the
8290: resulting DOM tree); the <a href="#list-of-active-formatting-elements">list of active formatting
8291: elements</a> just has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it; and the
8292: <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intable" title="insertion mode: in
8293: table">in table</a>".</p>
8294:
8295: <p>The <code><a href="tabular-data.html#the-tr-element">tr</a></code> start tag causes the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element
8296: to be popped off the stack and a <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> start tag to be
8297: implied; the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> and <code><a href="tabular-data.html#the-tr-element">tr</a></code> elements are
8298: then handled in a rather straight-forward manner, taking the parser
8299: through the "<a href="#parsing-main-intbody" title="insertion mode: in table body">in table
8300: body</a>" and "<a href="#parsing-main-intr" title="insertion mode: in row">in
8301: row</a>" insertion modes, after which the DOM looks as
8302: follows:</p>
8303:
1.159 mike 8304: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code></li><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tbody-element">tbody</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tr-element">tr</a></code></li></ul></li></ul></li></ul></li></ul></li></ul><p>Here, the <a href="#stack-of-open-elements">stack of open elements</a> has on it the
8305: elements <code><a href="semantics.html#the-html-element-0">html</a></code>, <code><a href="semantics.html#the-body-element-0">body</a></code>, <code><a href="tabular-data.html#the-table-element">table</a></code>,
1.1 mike 8306: <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>, and <code><a href="tabular-data.html#the-tr-element">tr</a></code>; the <a href="#list-of-active-formatting-elements">list of active
8307: formatting elements</a> still has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in
8308: it; and the <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intr" title="insertion
8309: mode: in row">in row</a>".</p>
8310:
8311: <p>The <code><a href="tabular-data.html#the-td-element">td</a></code> element start tag token, after putting a
8312: <code><a href="tabular-data.html#the-td-element">td</a></code> element on the tree, puts a marker on the <a href="#list-of-active-formatting-elements">list
8313: of active formatting elements</a> (it also switches to the "<a href="#parsing-main-intd" title="insertion mode: in cell">in cell</a>" <a href="#insertion-mode">insertion
8314: mode</a>).</p>
8315:
1.159 mike 8316: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code></li><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tbody-element">tbody</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tr-element">tr</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-td-element">td</a></code></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul><p>The marker means that when the "aaa" character tokens are seen,
1.1 mike 8317: no <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created to hold the resulting text
8318: node:</p>
8319:
1.159 mike 8320: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code></li><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tbody-element">tbody</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tr-element">tr</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-td-element">td</a></code><ul><li class="t3"><code>#text</code>: <span title="">aaa</span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul><p>The end tags are handled in a straight-forward manner; after
1.1 mike 8321: handling them, the <a href="#stack-of-open-elements">stack of open elements</a> has on it the
1.159 mike 8322: elements <code><a href="semantics.html#the-html-element-0">html</a></code>, <code><a href="semantics.html#the-body-element-0">body</a></code>, <code><a href="tabular-data.html#the-table-element">table</a></code>,
1.1 mike 8323: and <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>; the <a href="#list-of-active-formatting-elements">list of active formatting
8324: elements</a> still has the <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it (the
8325: marker having been removed by the "td" end tag token); and the
8326: <a href="#insertion-mode">insertion mode</a> is "<a href="#parsing-main-intbody" title="insertion mode: in
8327: table body">in table body</a>".</p>
8328:
8329: <p>Thus it is that the "bbb" character tokens are found. These
8330: trigger the "<a href="#parsing-main-intabletext" title="insertion mode: in table text">in table
8331: text</a>" insertion mode to be used (with the <a href="#original-insertion-mode">original
8332: insertion mode</a> set to "<a href="#parsing-main-intbody" title="insertion mode: in table
8333: body">in table body</a>"). The character tokens are collected,
8334: and when the next token (the <code><a href="tabular-data.html#the-table-element">table</a></code> element end tag) is
8335: seen, they are processed as a group. Since they are not all spaces,
8336: they are handled as per the "anything else" rules in the "<a href="#parsing-main-intable" title="insertion mode: in table">in table</a>" insertion mode,
8337: which defer to the "<a href="#parsing-main-inbody" title="insertion mode: in body">in
8338: body</a>" insertion mode but with <a href="#foster-parent" title="foster
8339: parent">foster parenting</a>.</p>
8340:
8341: <p>When <a href="#reconstruct-the-active-formatting-elements" title="reconstruct the active formatting elements">the
8342: active formatting elements are reconstructed</a>, a
8343: <code><a href="text-level-semantics.html#the-b-element">b</a></code> element is created and <a href="#foster-parent" title="foster
8344: parent">foster parented</a>, and then the "bbb" text node is
8345: appended to it:</p>
8346:
1.159 mike 8347: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code></li><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">bbb</span></li></ul></li><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tbody-element">tbody</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tr-element">tr</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-td-element">td</a></code><ul><li class="t3"><code>#text</code>: <span title="">aaa</span></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul></li></ul><p>The <a href="#stack-of-open-elements">stack of open elements</a> has on it the elements
8348: <code><a href="semantics.html#the-html-element-0">html</a></code>, <code><a href="semantics.html#the-body-element-0">body</a></code>, <code><a href="tabular-data.html#the-table-element">table</a></code>,
1.1 mike 8349: <code><a href="tabular-data.html#the-tbody-element">tbody</a></code>, and the new <code><a href="text-level-semantics.html#the-b-element">b</a></code> (again, note that
8350: this doesn't match the resulting tree!); the <a href="#list-of-active-formatting-elements">list of active
8351: formatting elements</a> has the new <code><a href="text-level-semantics.html#the-b-element">b</a></code> element in it;
8352: and the <a href="#insertion-mode">insertion mode</a> is still "<a href="#parsing-main-intbody" title="insertion
8353: mode: in table body">in table body</a>".</p>
8354:
8355: <p>Had the character tokens been only <a href="infrastructure.html#space-character" title="space
8356: character">space characters</a> instead of "bbb", then those
8357: <a href="infrastructure.html#space-character" title="space character">space characters</a> would just be
8358: appended to the <code><a href="tabular-data.html#the-tbody-element">tbody</a></code> element.</p>
8359:
8360: <p>Finally, the <code><a href="tabular-data.html#the-table-element">table</a></code> is closed by a "table" end
8361: tag. This pops all the nodes from the <a href="#stack-of-open-elements">stack of open
8362: elements</a> up to and including the <code><a href="tabular-data.html#the-table-element">table</a></code> element,
8363: but it doesn't affect the <a href="#list-of-active-formatting-elements">list of active formatting
8364: elements</a>, so the "ccc" character tokens after the table
8365: result in yet another <code><a href="text-level-semantics.html#the-b-element">b</a></code> element being created, this
8366: time after the table:</p>
8367:
1.755 mike 8368: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code></li><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">bbb</span></li></ul></li><li class="t1"><code><a href="tabular-data.html#the-table-element">table</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tbody-element">tbody</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-tr-element">tr</a></code><ul><li class="t1"><code><a href="tabular-data.html#the-td-element">td</a></code><ul><li class="t3"><code>#text</code>: <span title="">aaa</span></li></ul></li></ul></li></ul></li></ul></li><li class="t1"><code><a href="text-level-semantics.html#the-b-element">b</a></code><ul><li class="t3"><code>#text</code>: <span title="">ccc</span></li></ul></li></ul></li></ul></li></ul><h5 id="scripts-that-modify-the-page-as-it-is-being-parsed"><span class="secno">8.2.8.4 </span>Scripts that modify the page as it is being parsed</h5><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 8369:
8370: <p><i>This section is non-normative.</i></p>
8371:
8372: <p>Consider the following markup, which for this example we will
8373: assume is the document with <a href="infrastructure.html#url">URL</a> <code title="">http://example.com/inner</code>, being rendered as the
1.159 mike 8374: content of an <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code> in another document with the
1.1 mike 8375: <a href="infrastructure.html#url">URL</a> <code title="">http://example.com/outer</code>:</p>
8376:
8377: <pre><div id=a>
8378: <script>
8379: var div = document.getElementById('a');
8380: parent.document.body.appendChild(div);
8381: </script>
8382: <script>
8383: alert(document.URL);
8384: </script>
8385: </div>
8386: <script>
8387: alert(document.URL);
8388: </script></pre>
8389:
8390: <p>Up to the first "script" end tag, before the script is parsed,
8391: the result is relatively straightforward:</p>
8392:
1.306 mike 8393: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="semantics.html#the-div-element">div</a></code> <span class="t2" title=""><code class="attribute name">id</code>="<code class="attribute value"><a href="text-level-semantics.html#the-a-element">a</a></code>"</span><ul><li class="t3"><code>#text</code>: <span title="">
8394: </span></li><li class="t1"><code><a href="semantics.html#script">script</a></code><ul><li class="t3"><code>#text</code>: <span title="">var div = document.getElementById('a'); ⏎ parent.document.body.appendChild(div);</span></li></ul></li></ul></li></ul></li></ul></li></ul><p>After the script is parsed, though, the <code><a href="semantics.html#the-div-element">div</a></code> element
1.1 mike 8395: and its child <code><a href="semantics.html#script">script</a></code> element are gone:</p>
8396:
1.810 mike 8397: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code></li></ul></li></ul><p>They are, at this point, in the <code><a href="infrastructure.html#document">Document</a></code> of the
1.1 mike 8398: aforementioned outer <a href="browsers.html#browsing-context">browsing context</a>. However, the
8399: <a href="#stack-of-open-elements">stack of open elements</a> <em>still contains the
1.306 mike 8400: <code><a href="semantics.html#the-div-element">div</a></code> element</em>.</p>
1.1 mike 8401:
8402: <p>Thus, when the second <code><a href="semantics.html#script">script</a></code> element is parsed, it
1.810 mike 8403: is inserted <em>into the outer <code><a href="infrastructure.html#document">Document</a></code>
1.1 mike 8404: object</em>.</p>
8405:
1.794 mike 8406: <p>This also means that the <a href="webappapis.html#script-s-global-object">script's global object</a> is
1.1 mike 8407: the outer <a href="browsers.html#browsing-context">browsing context</a>'s <code><a href="browsers.html#window">Window</a></code>
8408: object, <em>not</em> the <code><a href="browsers.html#window">Window</a></code> object inside the
1.159 mike 8409: <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code>.</p>
1.1 mike 8410:
8411: <p class="note">This isn't a security problem since the script that
1.810 mike 8412: moves the <code><a href="semantics.html#the-div-element">div</a></code> into the outer <code><a href="infrastructure.html#document">Document</a></code> can
8413: only do so because the two <code><a href="infrastructure.html#document">Document</a></code> object have the
1.714 mike 8414: same <a href="browsers.html#origin">origin</a>.</p>
1.1 mike 8415:
8416: <p>Thus, the first alert says "http://example.com/outer".</p>
8417:
1.306 mike 8418: <p>Once the <code><a href="semantics.html#the-div-element">div</a></code> element's end tag is parsed, the
8419: <code><a href="semantics.html#the-div-element">div</a></code> element is popped off the stack, and so the next
1.810 mike 8420: <code><a href="semantics.html#script">script</a></code> element is in the inner <code><a href="infrastructure.html#document">Document</a></code>:</p>
1.1 mike 8421:
1.159 mike 8422: <ul class="domTree"><li class="t1"><code><a href="semantics.html#the-html-element-0">html</a></code><ul><li class="t1"><code><a href="semantics.html#the-head-element-0">head</a></code></li><li class="t1"><code><a href="semantics.html#the-body-element-0">body</a></code><ul><li class="t1"><code><a href="semantics.html#script">script</a></code><ul><li class="t3"><code>#text</code>: <span title="">alert(document.URL);</span></li></ul></li></ul></li></ul></li></ul><p>This second alert will say "http://example.com/inner".</p>
1.1 mike 8423:
8424:
8425:
8426:
1.755 mike 8427: <h3 id="serializing-html-fragments"><span class="secno">8.3 </span>Serializing HTML fragments</h3><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 8428:
8429: <p>The following steps form the <dfn id="html-fragment-serialization-algorithm">HTML fragment serialization
8430: algorithm</dfn>. The algorithm takes as input a DOM
1.810 mike 8431: <code><a href="infrastructure.html#element">Element</a></code> or <code><a href="infrastructure.html#document">Document</a></code>, referred to as <var title="">the node</var>, and either returns a string or raises an
1.1 mike 8432: exception.</p>
8433:
8434: <p class="note">This algorithm serializes the <em>children</em> of
8435: the node being serialized, not the node itself.</p>
8436:
8437: <ol><li><p>Let <var title="">s</var> be a string, and initialize it to
8438: the empty string.</p></li>
8439:
8440: <li>
8441:
8442: <p>For each child node of <var title="">the node</var>, in
8443: <a href="infrastructure.html#tree-order">tree order</a>, run the following steps:
8444:
8445: </p><ol><li><p>Let <var title="">current node</var> be the child node
8446: being processed.</p></li>
8447:
8448: <li>
8449:
8450: <p>Append the appropriate string from the following list to
8451: <var title="">s</var>:</p>
8452:
8453: <dl class="switch"><dt>If <var title="">current node</var> is an <code title="">Element</code></dt>
8454:
8455: <dd>
8456:
1.588 mike 8457: <p>Append a U+003C LESS-THAN SIGN character character (<),
8458: followed by the element's tag name. (For nodes created by the
8459: <a href="#html-parser">HTML parser</a> or <code title="">Document.createElement()</code>, the tag name will be
1.1 mike 8460: lowercase.)</p>
8461:
8462: <p>For each attribute that the element has, append a U+0020
8463: SPACE character, the attribute's name (which, for attributes
8464: set by the <a href="#html-parser">HTML parser</a> or by <code title="">Element.setAttributeNode()</code> or <code title="">Element.setAttribute()</code>, will be lowercase), a
1.588 mike 8465: U+003D EQUALS SIGN character (=), a U+0022 QUOTATION MARK
8466: character ("), the attribute's value, <a href="#escapingString" title="escaping a string">escaped as described below</a> in
8467: <i>attribute mode</i>, and a second U+0022 QUOTATION MARK
8468: character (").</p>
1.1 mike 8469:
8470: <p>While the exact order of attributes is UA-defined, and may
8471: depend on factors such as the order that the attributes were
8472: given in the original markup, the sort order must be stable,
8473: such that consecutive invocations of this algorithm serialize an
8474: element's attributes in the same order.</p>
8475:
1.588 mike 8476: <p>Append a U+003E GREATER-THAN SIGN character (>).</p>
1.1 mike 8477:
8478: <p>If <var title="">current node</var> is an
1.5 mike 8479: <code><a href="the-canvas-element.html#the-area-element">area</a></code>, <code><a href="semantics.html#the-base-element">base</a></code>, <code><a href="obsolete.html#basefont">basefont</a></code>,
1.724 mike 8480: <code><a href="obsolete.html#bgsound">bgsound</a></code>, <code><a href="semantics.html#the-br-element">br</a></code>, <code><a href="tabular-data.html#the-col-element">col</a></code>,
1.159 mike 8481: <code><a href="text-level-semantics.html#the-embed-element">embed</a></code>, <code><a href="obsolete.html#frame">frame</a></code>, <code><a href="semantics.html#the-hr-element">hr</a></code>,
8482: <code><a href="text-level-semantics.html#the-img-element">img</a></code>, <code><a href="forms.html#the-input-element">input</a></code>, <code><a href="forms.html#the-keygen-element">keygen</a></code>,
1.589 mike 8483: <code><a href="semantics.html#the-link-element">link</a></code>, <code><a href="semantics.html#meta">meta</a></code>, <code><a href="text-level-semantics.html#the-param-element">param</a></code>, or
1.724 mike 8484: <code><a href="obsolete.html#wbr">wbr</a></code> element, then continue on to the next child
1.589 mike 8485: node at this point.</p> <!-- also, i guess: image and isindex,
8486: but we don't list those because we don't consider those
8487: "elements", more "macros", and thus we should never serialize
8488: them -->
1.1 mike 8489:
8490: <p>If <var title="">current node</var> is a <code><a href="semantics.html#the-pre-element">pre</a></code>,
1.42 mike 8491: <code><a href="forms.html#the-textarea-element">textarea</a></code>, or <code><a href="obsolete.html#listing">listing</a></code> element, append
1.1 mike 8492: a U+000A LINE FEED (LF) character.</p>
8493:
8494: <p>Append the value of running the <a href="#html-fragment-serialization-algorithm">HTML fragment
8495: serialization algorithm</a> on the <var title="">current
8496: node</var> element (thus recursing into this algorithm for
1.588 mike 8497: that element), followed by a U+003C LESS-THAN SIGN character
8498: (<), a U+002F SOLIDUS character (/), the element's tag name
8499: again, and finally a U+003E GREATER-THAN SIGN character
8500: (>).</p>
1.1 mike 8501:
8502: </dd>
8503:
8504:
8505: <dt>If <var title="">current node</var> is a <code title="">Text</code> or <code title="">CDATASection</code>
8506: node</dt>
8507:
8508: <dd>
8509:
1.19 mike 8510: <p>If the parent of <var title="">current node</var> is a
1.42 mike 8511: <code><a href="semantics.html#the-style-element">style</a></code>, <code><a href="semantics.html#script">script</a></code>, <code><a href="obsolete.html#xmp">xmp</a></code>,
1.159 mike 8512: <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code>, <code><a href="obsolete.html#noembed">noembed</a></code>,
1.222 mike 8513: <code><a href="obsolete.html#noframes">noframes</a></code>, or <code><a href="obsolete.html#plaintext">plaintext</a></code> element, or
8514: if the parent of <var title="">current node</var> is
1.794 mike 8515: <code><a href="semantics.html#the-noscript-element">noscript</a></code> element and <a href="webappapis.html#concept-n-script" title="concept-n-script">scripting is enabled</a> for the
1.222 mike 8516: node, then append the value of <var title="">current
8517: node</var>'s <code title="">data</code> IDL attribute
8518: literally.</p>
1.1 mike 8519:
8520: <p>Otherwise, append the value of <var title="">current
1.192 mike 8521: node</var>'s <code title="">data</code> IDL attribute, <a href="#escapingString" title="escaping a string">escaped as described
1.1 mike 8522: below</a>.</p>
8523:
8524: </dd>
8525:
8526:
8527: <dt>If <var title="">current node</var> is a <code title="">Comment</code></dt>
8528:
8529: <dd>
8530:
8531: <p>Append the literal string <code><!--</code> (U+003C
8532: LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+002D HYPHEN-MINUS,
1.192 mike 8533: U+002D HYPHEN-MINUS), followed by the value of <var title="">current node</var>'s <code title="">data</code> IDL
1.1 mike 8534: attribute, followed by the literal string <code>--></code>
8535: (U+002D HYPHEN-MINUS, U+002D HYPHEN-MINUS, U+003E GREATER-THAN
8536: SIGN).</p>
8537:
8538: </dd>
8539:
8540:
8541: <dt>If <var title="">current node</var> is a <code title="">ProcessingInstruction</code></dt>
8542:
8543: <dd>
8544:
8545: <p>Append the literal string <code><?</code> (U+003C
8546: LESS-THAN SIGN, U+003F QUESTION MARK), followed by the value
1.192 mike 8547: of <var title="">current node</var>'s <code title="">target</code> IDL attribute, followed by a single
8548: U+0020 SPACE character, followed by the value of <var title="">current node</var>'s <code title="">data</code> IDL
1.1 mike 8549: attribute, followed by a single U+003E GREATER-THAN SIGN
1.464 mike 8550: character (>).</p>
1.1 mike 8551:
8552: </dd>
8553:
8554:
8555: <dt>If <var title="">current node</var> is a <code title="">DocumentType</code></dt>
8556:
8557: <dd>
8558:
8559: <p>Append the literal string <code><!DOCTYPE</code> (U+003C
8560: LESS-THAN SIGN, U+0021 EXCLAMATION MARK, U+0044 LATIN CAPITAL
8561: LETTER D, U+004F LATIN CAPITAL LETTER O, U+0043 LATIN CAPITAL
8562: LETTER C, U+0054 LATIN CAPITAL LETTER T, U+0059 LATIN CAPITAL
8563: LETTER Y, U+0050 LATIN CAPITAL LETTER P, U+0045 LATIN CAPITAL
8564: LETTER E), followed by a space (U+0020 SPACE), followed by the
1.192 mike 8565: value of <var title="">current node</var>'s <code title="">name</code> IDL attribute, followed by the literal
1.1 mike 8566: string <code>></code> (U+003E GREATER-THAN SIGN).</p>
8567:
8568: </dd>
8569:
8570:
8571: </dl><p>Other node types (e.g. <code title="">Attr</code>) cannot
8572: occur as children of elements. If, despite this, they somehow do
8573: occur, this algorithm must raise an
8574: <code><a href="infrastructure.html#invalid_state_err">INVALID_STATE_ERR</a></code> exception.</p>
8575:
8576: </li>
8577:
8578: </ol></li>
8579:
8580: <li><p>The result of the algorithm is the string <var title="">s</var>.</p></li>
8581:
8582: </ol><p><dfn id="escapingString">Escaping a string</dfn> (for the
8583: purposes of the algorithm above) consists of replacing any
8584: occurrences of the "<code title="">&</code>" character by the
8585: string "<code title="">&amp;</code>", any occurrences of the
8586: U+00A0 NO-BREAK SPACE character by the string "<code title="">&nbsp;</code>", and, if the algorithm was invoked in
8587: the <i>attribute mode</i>, any occurrences of the "<code title="">"</code>" character by the string "<code title="">&quot;</code>", or if it was not, any occurrences of
8588: the "<code title=""><</code>" character by the string "<code title="">&lt;</code>", any occurrences of the "<code title="">></code>" character by the string "<code title="">&gt;</code>".</p>
8589:
8590: <p class="note">Entity reference nodes are <a href="infrastructure.html#entity-references">assumed to be expanded</a> by the user
8591: agent, and are therefore not covered in the algorithm above.</p>
8592:
8593: <p class="note">It is possible that the output of this algorithm, if
8594: parsed with an <a href="#html-parser">HTML parser</a>, will not return the
8595: original tree structure. For instance, if a <code><a href="forms.html#the-textarea-element">textarea</a></code>
8596: element to which a <code title="">Comment</code> node has been
8597: appended is serialized and the output is then reparsed, the comment
8598: will end up being displayed in the text field. Similarly, if, as a
8599: result of DOM manipulation, an element contains a comment that
8600: contains the literal string "<code title="">--></code>", then
8601: when the result of serializing the element is parsed, the comment
8602: will be truncated at that point and the rest of the comment will be
8603: interpreted as markup. More examples would be making a
8604: <code><a href="semantics.html#script">script</a></code> element contain a text node with the text string
8605: "<code></script></code>", or having a <code><a href="semantics.html#the-p-element">p</a></code> element that
8606: contains a <code><a href="semantics.html#the-ul-element">ul</a></code> element (as the <code><a href="semantics.html#the-ul-element">ul</a></code> element's
8607: <a href="#syntax-start-tag" title="syntax-start-tag">start tag</a> would imply the end
8608: tag for the <code><a href="semantics.html#the-p-element">p</a></code>).</p>
8609:
8610:
1.755 mike 8611: <h3 id="parsing-html-fragments"><span class="secno">8.4 </span>Parsing HTML fragments</h3><p class="XXX annotation"><b>Status: </b><i>Last call for comments</i></p>
1.1 mike 8612:
8613: <p>The following steps form the <dfn id="html-fragment-parsing-algorithm">HTML fragment parsing
8614: algorithm</dfn>. The algorithm optionally takes as input an
1.810 mike 8615: <code><a href="infrastructure.html#element">Element</a></code> node, referred to as the <var title="">context</var> element, which gives the context for the
1.1 mike 8616: parser, as well as <var title="">input</var>, a string to parse, and
8617: returns a list of zero or more nodes.</p>
8618:
8619: <p class="note">Parts marked <dfn id="fragment-case">fragment case</dfn> in algorithms
8620: in the parser section are parts that only occur if the parser was
8621: created for the purposes of this algorithm (and with a <var title="">context</var> element). The algorithms have been annotated
8622: with such markings for informational purposes only; such markings
8623: have no normative weight. If it is possible for a condition
8624: described as a <a href="#fragment-case">fragment case</a> to occur even when the
8625: parser wasn't created for the purposes of handling this algorithm,
8626: then that is an error in the specification.</p>
8627:
8628: <ol><li>
8629:
1.810 mike 8630: <p>Create a new <code><a href="infrastructure.html#document">Document</a></code> node, and mark it as being
1.1 mike 8631: an <a href="dom.html#html-documents" title="HTML documents">HTML document</a>.</p>
8632:
8633: </li>
8634:
8635: <li>
8636:
8637: <p>If there is a <var title="">context</var> element, and the
1.810 mike 8638: <code><a href="infrastructure.html#document">Document</a></code> of the <var title="">context</var> element
8639: is in <a href="dom.html#quirks-mode">quirks mode</a>, then let the <code><a href="infrastructure.html#document">Document</a></code>
8640: be in <a href="dom.html#quirks-mode">quirks mode</a>. Otherwise, if there is a <var title="">context</var> element, and the <code><a href="infrastructure.html#document">Document</a></code> of
1.880 mike 8641: the <var title="">context</var> element is in <a href="dom.html#limited-quirks-mode">limited-quirks
1.810 mike 8642: mode</a>, then let the <code><a href="infrastructure.html#document">Document</a></code> be in
1.880 mike 8643: <a href="dom.html#limited-quirks-mode">limited-quirks mode</a>. Otherwise, leave the
8644: <code><a href="infrastructure.html#document">Document</a></code> in <a href="dom.html#no-quirks-mode">no-quirks mode</a>.</p>
1.1 mike 8645:
8646: </li>
8647:
8648: <li>
8649:
8650: <p>Create a new <a href="#html-parser">HTML parser</a>, and associate it with
1.810 mike 8651: the just created <code><a href="infrastructure.html#document">Document</a></code> node.</p>
1.1 mike 8652:
8653: </li>
8654:
8655: <li>
8656:
8657: <p>If there is a <var title="">context</var> element, run these
8658: substeps:</p>
8659:
8660: <ol><li>
8661:
1.541 mike 8662: <p>Set the state of the <a href="#html-parser">HTML parser</a>'s
8663: <a href="#tokenization">tokenization</a> stage as follows:</p>
1.1 mike 8664:
1.159 mike 8665: <dl class="switch"><dt>If it is a <code><a href="semantics.html#the-title-element-0">title</a></code> or <code><a href="forms.html#the-textarea-element">textarea</a></code>
1.1 mike 8666: element</dt>
8667:
1.541 mike 8668: <dd>Switch the tokenizer to the <a href="#rcdata-state">RCDATA state</a>.</dd>
1.1 mike 8669:
8670:
1.672 mike 8671: <dt>If it is a <code><a href="semantics.html#the-style-element">style</a></code>, <code><a href="obsolete.html#xmp">xmp</a></code>,
8672: <code><a href="text-level-semantics.html#the-iframe-element">iframe</a></code>, <code><a href="obsolete.html#noembed">noembed</a></code>, or
1.5 mike 8673: <code><a href="obsolete.html#noframes">noframes</a></code> element</dt>
1.1 mike 8674:
1.541 mike 8675: <dd>Switch the tokenizer to the <a href="#rawtext-state">RAWTEXT state</a>.</dd>
1.1 mike 8676:
8677:
1.672 mike 8678: <dt>If it is a <code><a href="semantics.html#script">script</a></code> element</dt>
8679:
8680: <dd>Switch the tokenizer to the <a href="#script-data-state">script data state</a>.</dd>
8681:
8682:
1.1 mike 8683: <dt>If it is a <code><a href="semantics.html#the-noscript-element">noscript</a></code> element</dt>
8684:
1.541 mike 8685: <dd>If the <a href="#scripting-flag">scripting flag</a> is enabled, switch the
8686: tokenizer to the <a href="#rawtext-state">RAWTEXT state</a>. Otherwise,
8687: leave the tokenizer in the <a href="#data-state">data state</a>.</dd>
1.1 mike 8688:
8689:
1.42 mike 8690: <dt>If it is a <code><a href="obsolete.html#plaintext">plaintext</a></code> element</dt>
1.1 mike 8691:
1.541 mike 8692: <dd>Switch the tokenizer to the <a href="#plaintext-state">PLAINTEXT
8693: state</a>.</dd>
1.1 mike 8694:
8695:
8696: <dt>Otherwise</dt>
8697:
1.541 mike 8698: <dd>Leave the tokenizer in the <a href="#data-state">data state</a>.</dd>
1.1 mike 8699:
1.672 mike 8700: </dl><p class="note">For performance reasons, an implementation that
1.756 mike 8701: does not report errors and that uses the actual state machine
8702: described in this specification directly could use the PLAINTEXT
8703: state instead of the RAWTEXT and script data states where those
8704: are mentioned in the list above. Except for rules regarding
8705: parse errors, they are equivalent, since there is no
8706: <a href="#appropriate-end-tag-token">appropriate end tag token</a> in the fragment case, yet
8707: they involve far fewer state transitions.</p>
1.672 mike 8708:
8709: </li>
1.1 mike 8710:
8711: <li>
8712:
1.159 mike 8713: <p>Let <var title="">root</var> be a new <code><a href="semantics.html#the-html-element-0">html</a></code> element
1.1 mike 8714: with no attributes.</p>
8715:
8716: </li>
8717:
8718: <li>
8719:
8720: <p>Append the element <var title="">root</var> to the
1.810 mike 8721: <code><a href="infrastructure.html#document">Document</a></code> node created above.</p>
1.1 mike 8722:
8723: </li>
8724:
8725: <li>
8726:
8727: <p>Set up the parser's <a href="#stack-of-open-elements">stack of open elements</a> so that
8728: it contains just the single element <var title="">root</var>.</p>
8729:
8730: </li>
8731:
8732: <li>
8733:
8734: <p><a href="#reset-the-insertion-mode-appropriately" title="reset the insertion mode appropriately">Reset the
8735: parser's insertion mode appropriately</a>.</p>
8736:
8737: <p class="note">The parser will reference the <var title="">context</var> element as part of that algorithm.</p>
8738:
8739: </li>
8740:
8741: <li>
8742:
8743: <p>Set the parser's <a href="#form-element-pointer"><code>form</code> element pointer</a>
8744: to the nearest node to the <var title="">context</var> element
8745: that is a <code><a href="forms.html#the-form-element">form</a></code> element (going straight up the
8746: ancestor chain, and including the element itself, if it is a
8747: <code><a href="forms.html#the-form-element">form</a></code> element), or, if there is no such
8748: <code><a href="forms.html#the-form-element">form</a></code> element, to null.</p>
8749:
8750: </li>
8751:
8752: </ol></li>
8753:
8754: <li>
8755:
8756: <p>Place into the <a href="#the-input-stream">input stream</a> for the <a href="#html-parser">HTML
8757: parser</a> just created the <var title="">input</var>. The
8758: encoding <a href="#concept-encoding-confidence" title="concept-encoding-confidence">confidence</a> is
8759: <i>irrelevant</i>.</p>
8760:
8761: </li>
8762:
8763: <li>
8764:
8765: <p>Start the parser and let it run until it has consumed all the
8766: characters just inserted into the input stream.</p>
8767:
8768: </li>
8769:
8770: <li>
8771:
8772: <p>If there is a <var title="">context</var> element, return the
8773: child nodes of <var title="">root</var>, in <a href="infrastructure.html#tree-order">tree
8774: order</a>.</p>
8775:
1.810 mike 8776: <p>Otherwise, return the children of the <code><a href="infrastructure.html#document">Document</a></code>
1.1 mike 8777: object, in <a href="infrastructure.html#tree-order">tree order</a>.</p>
8778:
8779: </li>
8780:
1.123 mike 8781: </ol></div></body></html>
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