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bug#14303: 24.3; Bug in comment-search-backward

From: Leo Liu
Subject: bug#14303: 24.3; Bug in comment-search-backward
Date: Fri, 17 May 2013 19:34:17 +0800
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (OS X 10.8.3)

On 2013-05-17 19:14 +0800, Andreas Röhler wrote:
> The succession of things doesn't look right yet.
> if (eq comment-use-syntax nil)
> re-search-backward based solution
> which is very seldom. Grep shows 4 cases.
> Otherwise syntax-ppss - , prog1 and nth 4 goto char nth 8 - or so.
> Make sure wrong regexp isn't called then/no wrong matches.
> Andreas

There is possible optimisation when 'end' is in a string. Other than
that do you have a case where my solution will fail?


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