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

[Andreas Röhler]

Am 17.05.2013 13:34, schrieb 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.

Don't understand. "end" can't be in a string, if syntax-ppss is used.


 Other than
> that do you have a case where my solution will fail?

Not just fail.
However most if this code looks redundant, useless employing of re-search-..., 
which will slow down Emacs when called from a program.



> Leo