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Re: parentheses matching failure on valid sexp


From: Joe Wells
Subject: Re: parentheses matching failure on valid sexp
Date: Tue, 11 Sep 2007 08:07:30 +0100
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1 (gnu/linux)

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.

-- 
Joe




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