Path: utzoo!attcan!uunet!mcsun!ub4b!lln-cs!pys
From: pys@lln-cs.UUCP (Yves Schobbens)
Newsgroups: comp.emacs
Subject: bug in GNU emacs regexp?
Keywords: regexp, match-data
Message-ID: <1000@lln-cs.UUCP>
Date: 26 Oct 90 14:14:28 GMT
Reply-To: pys@info.ucl.ac.be (Pierre-Yves Schobbens)
Followup-To: comp.emacs
Organization: Computer Sc. Depart. University of Louvain-la-Neuve, Belgium
Lines: 15

Could someone tell me if the following bug has been corrected in recent
versions of Emacs (or why it is not a bug) ? I have it in 18.47.

TEST:
type: 56 C-a ESC-x replace-regexp RET \(\(5\)7\|5\)6 RET \2 RET
if the buffer contains 5, your emacs has the same bug;
the correct answer is to raise "No match for..."

RATIONALE:
The second \(..\) is first matched with 5, but this match is retracted
when 7 has to be matched against 6. However, the match-data is not cleared
appropriately. (Well, in many other cases it isn't)

Many thanks in advance,
	Pierre-Yves.