IRB is improved with Reline and RDoc

Reline is a readline stdlib compatible library. It also supports
multiline input. IRB is improved with Reline and supports multiline.
Besides, supports showing documents when completed.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67645 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 1 deletions

diff --git a/lib/irb/input-method.rb b/lib/irb/input-method.rb
index f491d5a760..1f4f1d4746 100644
--- a/lib/irb/input-method.rb
+++ b/lib/irb/input-method.rb
@@ -142,13 +142,17 @@ module IRB
         @stdout = IO.open(STDOUT.to_i, 'w', :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-")
       end
 
+      def check_termination(&block)
+        @check_termination_proc = block
+      end
+
       # Reads the next line from this input method.
       #
       # See IO#gets for more information.
       def gets
         Readline.input = @stdin
         Readline.output = @stdout
-        if l = readline(@prompt, false)
+        if l = readmultiline(@prompt, false, &@check_termination_proc)
           HISTORY.push(l) if !l.empty?
           @line[@line_no += 1] = l + "\n"
         else