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regex.c: emacs & glibc (and xemacs, and grep and ...)

From: Sam Steingold
Subject: regex.c: emacs & glibc (and xemacs, and grep and ...)
Date: 04 Apr 2002 13:55:05 -0500
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2.50

Emacs comes with it's own version of regex.c, even though most UNIX
systems have a regex implementation.  IIUC, this is for portability.

Suppose glibc's regex and Emacs' regex are unified - will Emacs still
build it's own regex version even on gnu systems (linux, hurd)?

this is probably not a big deal (regex is relatively small) -
but is there a way to detect that the system-supplied regex
(or another, bigger library, e.g., gettext or iconv) is good enough?

Finally, GNU CLISP (http://clisp.cons.org) comes with a GNU regex.c of
1994(!) - which version should we upgrade to?  Emacs?  GLIBC? GNU grep?


Sam Steingold (http://www.podval.org/~sds) running RedHat7.2 GNU/Linux
Keep Jerusalem united! <http://www.onejerusalem.org/Petition.asp>
Read, think and remember! <http://www.iris.org.il> <http://www.memri.org/>
UNIX is a way of thinking.  Windows is a way of not thinking.

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