Optimize for Autoconf usage pattern.
commitaa46ced67010190918295b965f5e2879dcd9a30c
authorEric Blake <ebb9@byu.net>
Sat, 29 Sep 2007 23:48:29 +0000 (29 17:48 -0600)
committerEric Blake <ebb9@byu.net>
Sat, 29 Sep 2007 23:48:29 +0000 (29 17:48 -0600)
tree93013f95e23ddc58c3352cce13541081fa6ef9bd
parente3b90fb678b610e3d2ee86d1f00e6f20b1eeef29
Optimize for Autoconf usage pattern.

* src/builtin.c (m4_regexp, m4_patsubst): Handle empty regex
faster.

Signed-off-by: Eric Blake <ebb9@byu.net>
ChangeLog
src/builtin.c