Replacing GNU grep revisited

Sean Farley sean-freebsd at
Sat Jun 21 08:56:02 PDT 2003

In January, Pedro Giffuni started a thread about replacing GNU's grep in
the system.  Interestingly, I did not know about the grep thread on
hackers until later.  James Howard had interjected in February with
mention that he had gotten patches to speed up freegrep.  I had sent him
those patches in late January, but I have not heard from him since.
Hopefully, he is OK and just busy.

I have placed the patches up on Geocities¹ for others to try out.  They
get freegrep fairly close to the performance of GNU's grep.  Also
included is a small patch to regex to squeak a bit more performance out
of it, but I am not certain if it actually helps or not.

BTW, Postgres is using a newer version of the regex library--swiped from
TCL--that FreeBSD uses.  It supports multibyte characters.  Is it time
for an update?



P.S.  Please Cc me as I am not on the list.
sean-freebsd at

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