[ruby-core:38689] [Ruby 1.9 - Bug #3320] emacs ruby-mode.el font-lock fails on symboled string ending with ?

Issue #3320 has been updated by Yui NARUSE.

Parent task set to #5142


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Bug #3320: emacs ruby-mode.el font-lock fails on symboled string ending with ?
http://redmine.ruby-lang.org/issues/3320

Author: Zev Blut
Status: Assigned
Priority: Normal
Assignee: Nobuyoshi Nakada
Category: 
Target version: 1.9.4
ruby -v: 1.9.2 (trunk and 1.8.7)+


=begin
 Fontification breaks when emacs sees a symbol like
 :'this is a symbol?'
 
 example code:
 ----------
 class EmacsExample
   :symbol
 
   'this is a test'
   'is this a test?'
   "Can this be a test"
   :'this is an error?'
 
   def bar
     @help
   end
 end
 
 ----
 
 I have a very hacked fix in ruby-font-lock-syntactic-keywords
 for 
     ;; the last $', $", $` in the respective string is not variable
     ;; the last ?', ?", ?` in the respective string is not ascii code
     ("\\(^\\|[\[ \t\n<+\(,=:]\\)\\(['\"`]\\)\\(\\\\.\\|\\2\\|[^'\"`\n\\\\]\\)*?\\\\?[?$]\\(\\2\\)"
      (2 (7 . nil))
     (4 (7 . nil)))
 
 by adding : in the above matches with space tabs L etc...
 
 See the attached patch
 
 I am not sure this is the proper fix, but it fixes the above example.
 
 Thanks,
 Zev
=end



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