On 7/17/08, Miles Bader <miles.bader@necel.com> wrote:

"Lennart Borgman" <lennart.borgman@gmail.com> writes:
>> If you want to reject matches that extend past some point, just do
>> something like:
>>
>> (and (looking-at REGEXP) (<= (match-end 0) BOUND))
>
> Thanks Miles,
>
> Yes, that is one possibility. But then perhaps I would assume that
> re-search-forward better might optimize that search since it can (in theory)
> cut off the searching at BOUND. In the case I am looking at performance is
> important.

Why don't you time it?

Because I thought someone here knew more about the performance differences (if any). I am also a bit surprised that looking-at does not have a BOUND parameter and hoped to get some comments on that.

But otherwise it is of course a good suggestion to time it.