Re: [patch #6899] Speed-up for searching in multibyte and ignore-icase.

[Aharon Robbins]

NOTE: I'm replying manually since I can't deal with Savannah.

> From: Paolo Bonzini <address@hidden>
> Date: Mon, 08 Mar 2010 18:22:01 +0000
> Subject: [patch #6899] Speed-up for searching in multibyte and ignore-icase.
>
> Especially now that there is a
> good DFA-based matcher in glibc,

Has anybody proven this?  There was a period of time where I removed
dfa from gawk because "it wasn't needed anymore now that regex has a dfa
matcher" but I had to reinstate it - the regex matcher was intolerably
slower.  I added the GAWK_NO_DFA environment variable so that it'd be
possible to test using just the regex matcher and I think grep now has
a similar variable.

Paolo - the enthusiam and progress in dfa is great - but please bear
previous experience in mind so that we don't make any changes we'll
regret later.

Thanks,

Arnold