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Re: Relative speed of globbing and regex implementations
From: |
Jim Meyering |
Subject: |
Re: Relative speed of globbing and regex implementations |
Date: |
Fri, 07 Dec 2007 07:57:13 +0100 |
"James Youngman" <address@hidden> wrote:
> I notice that the gnulib fnmatch implementation is slower than the
> regex implementation, at least in those cases where a pattern can be
> compiled once and offered thousands of times. Very roughly, I'd guess
> that the fnmatch implementation takes about 1.4x the time that the
> regex implementation takes.
>
> Is there a known reason for this, is it avoidable, or are we stuck
> with it? I was considering figuring out how to rewrite globs as
> regexes, but thought I'd ask first...
This is news to me.
What type of patterns/regexps are you comparing?