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Re: parentheses matching failure on valid sexp


From: Andreas Röhler
Subject: Re: parentheses matching failure on valid sexp
Date: Thu, 13 Sep 2007 08:40:56 +0200
User-agent: KMail/1.8.2

Am Dienstag, 11. September 2007 09:07 schrieb Joe Wells:
> Joe Wells <address@hidden> writes:
> > Sven Joachim <address@hidden> writes:
> >> Joe Wells <address@hidden> writes:
> >>> To reproduce this bug:
> >>>
> >>> 1. Save the attached file as foobar.el.
> >>> 2. Run “emacs -Q foobar.el”.
> >>> 3. Delete the trailing right parenthesis on line 435.
> >>> 4. Type a right parenthesis.
> >>>
> >>> The correct behavior would be to match the leading left parenthesis on
> >>> line 1.  The actual buggy behavior is that the message “Mismatched
> >>> parentheses” is given.
> >>>
> >>> This bug is sensitive to the size of the input.  If you delete much of
> >>> the input, then the bug goes away.
> >>
> >> This is documented behavior, see the variable
> >> blink-matching-paren-distance:
> >
> > Thank you for pointing this out!
>
> I suggest there should be a different error message ("Could not find
> matching parentheses within %d characters") if the failure is due to
> exceeding the blink-matching-paren-distance limit.  The current
> message of "Mismatched parentheses" in this case makes one think the
> error is due to a bracket matching a brace, or something like that.


Meanwhile this might be helpful:

http://www.emacswiki.org/cgi-bin/wiki/MatchParenthesis

Andreas Röhler




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