Has there been any thought given to moving to the modified Henry
Spencer regex library used in NetBSD & OpenBSD's libc?
des@dwp ~% head -3 /usr/src/lib/libc/regex/COPYRIGHT
Copyright 1992, 1993, 1994 Henry Spencer. All rights reserved.
This software is not subject to any license of the American Telephone
and Telegraph Company or of the Regents of the University of
I think maybe what Ben was referring to was that Spencer has released
an updated version of his regexp library that doesn't penalize wide
character locales. I believe our current one performs terribly on
everything but one byte character sets, whereas the newer Spencer
library performs as well as one could hope with wide characters. The
PostgreSQL group did some testing and found Spencers library to be the
fastest wide character regexp engine while still maintaining very good
levels of performance for single byte character sets. You'll have to
check the PostgreSQL archives for details: it's been two years since
that change was committed to their tree. -sc