Re: `looking-back' strange warning

[Tom Tromey]

>>>>> "Stefan" == Stefan Monnier <monnier@iro.umontreal.ca> writes:

Stefan> You can pass (point-min) for the limit if that's what you want.
Stefan> Making it optional Encourages people to think that looking-at is just
Stefan> like looking-back, with the same performance characteristic, whereas
Stefan> making it mandatory encourages people to put a reasonable limit and
Stefan> hence avoid pathological behavior at the end of large buffers.

It could be made faster by reversing the regexp, then adding a mode to
regex.c to consider characters from the buffer in the reverse order.
Then the limit could remain optional.

Tom