Remove trailing whitespace from *.sgml files.

Historically we've been lax about this, but seeing that we're not
lax in C files, there doesn't seem to be a good reason to be so
in the documentation.  Remove the existing occurrences (mostly
though not entirely in copied-n-pasted psql output), and modify
.gitattributes so that "git diff --check" will warn about future
cases.

While at it, add *.pm to the set of extensions .gitattributes
knows about, and remove some obsolete entries for files that
we don't have in the tree anymore.

Per followup discussion of commit 5a892c9b1.

Discussion: https://postgr.es/m/[email protected]

1 files changed, 4 insertions, 4 deletions

diff --git a/doc/src/sgml/hstore.sgml b/doc/src/sgml/hstore.sgml
index 679878b3afc..335d64641ba 100644
--- a/doc/src/sgml/hstore.sgml
+++ b/doc/src/sgml/hstore.sgml
@@ -817,7 +817,7 @@ CREATE TABLE test (col1 integer, col2 text, col3 text);
 INSERT INTO test VALUES (123, 'foo', 'bar');
 
 SELECT hstore(t) FROM test AS t;
-                   hstore                    
+                   hstore
 ---------------------------------------------
  "col1"=>"123", "col2"=>"foo", "col3"=>"bar"
 (1 row)
@@ -831,9 +831,9 @@ CREATE TABLE test (col1 integer, col2 text, col3 text);
 
 SELECT * FROM populate_record(null::test,
                               '"col1"=>"456", "col2"=>"zzz"');
- col1 | col2 | col3 
+ col1 | col2 | col3
 ------+------+------
-  456 | zzz  | 
+  456 | zzz  |
 (1 row)
 </programlisting>
   </para>
@@ -845,7 +845,7 @@ CREATE TABLE test (col1 integer, col2 text, col3 text);
 INSERT INTO test VALUES (123, 'foo', 'bar');
 
 SELECT (r).* FROM (SELECT t #= '"col3"=&gt;"baz"' AS r FROM test t) s;
- col1 | col2 | col3 
+ col1 | col2 | col3
 ------+------+------
   123 | foo  | baz
 (1 row)