Match "Re :" as a "Re:" prefix

* lisp/gnus/message.el (message-subject-re-regexp): Also match
"Re :" as a "Re:" prefix (commonly used in France).

diff --git a/lisp/gnus/message.el b/lisp/gnus/message.el
index 27cae74c755958f63ac2ec5e2ca045500cffb3c9..a871ff89f409c108af279298b430142c96035362 100644 (file)
--- a/lisp/gnus/message.el
+++ b/lisp/gnus/message.el
@@ -296,7 +296,7 @@ any confusion."
                 regexp))
 
 (defcustom message-subject-re-regexp
-  "^[ \t]*\\([Rr][Ee]\\(\\[[0-9]*\\]\\)*:[ \t]*\\)*[ \t]*"
+  "^[ \t]*\\([Rr][Ee]\\(\\[[0-9]*\\]\\)* ?:[ \t]*\\)*[ \t]*"
   "*Regexp matching \"Re: \" in the subject line."
   :group 'message-various
   :link '(custom-manual "(message)Message Headers")