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bug#18013: 24.3.92; looking-back "[^\n]" taking a lot of time in large b
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From: |
Andreas Schwab |
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Subject: |
bug#18013: 24.3.92; looking-back "[^\n]" taking a lot of time in large buffers |
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Date: |
Tue, 15 Jul 2014 09:21:12 +0200 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) |
Kevin Rodgers <kevin.d.rodgers@gmail.com> writes:
> On 7/14/14 5:12 AM, Nicolas Richard wrote:
>> As you see it takes more than 8 seconds on my system, most of that time
>> is spent looking-back (inserting the file is quick).
>>
>> (looking-back "[^\n]") is bad code, so I totally deserve this. Still, is
>> it possible to make the search smarter when the match is supposed to be
>> "anchored" at point ? Otherwise let's just close this bug.
>
> Use "\\=" to match the empty string at point.
That's what looking-back does.
Andreas.
--
Andreas Schwab, SUSE Labs, schwab@suse.de
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