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

[Leo Liu]

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?

Leo