Mercurial > hg > octave-lojdl > gnulib-hg
changeset 13652:63612cd2a9b1
getopt: optimize previous patch
* m4/getopt.m4 (gl_GETOPT_CHECK_HEADERS): Correctly check for
empty variable. Speed up awk script.
Reported by Paolo Bonzini.
Signed-off-by: Eric Blake <eblake@redhat.com>
| author | Eric Blake <eblake@redhat.com> |
|---|---|
| date | Wed, 08 Sep 2010 08:49:15 -0600 |
| parents | a87ee375533d |
| children | 653e652cfd95 |
| files | ChangeLog m4/getopt.m4 |
| diffstat | 2 files changed, 10 insertions(+), 4 deletions(-) [+] |
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--- a/ChangeLog +++ b/ChangeLog @@ -37,6 +37,13 @@ glibc, and refer the reader there. Keep BSD API documentation, as that is not readily available elsewhere. +2010-09-08 Eric Blake <eblake@redhat.com> + + getopt: optimize previous patch + * m4/getopt.m4 (gl_GETOPT_CHECK_HEADERS): Correctly check for + empty variable. Speed up awk script. + Reported by Paolo Bonzini. + 2010-09-07 Eric Blake <eblake@redhat.com> getopt: handle POSIXLY_CORRECT set but not exported
--- a/m4/getopt.m4 +++ b/m4/getopt.m4 @@ -1,4 +1,4 @@ -# getopt.m4 serial 30 +# getopt.m4 serial 31 dnl Copyright (C) 2002-2006, 2008-2010 Free Software Foundation, Inc. dnl This file is free software; the Free Software Foundation dnl gives unlimited permission to copy and/or distribute it, @@ -218,9 +218,8 @@ # so take care to revert to the correct (non-)export state. dnl GNU Coding Standards currently allow awk but not env; besides, env dnl is ambiguous with environment values that contain newlines. - gl_awk_probe='BEGIN { for (v in ENVIRON) - if (v == "POSIXLY_CORRECT") print "x" }' - case ${POSIXLY_CORRECT:+x}`$AWK "$gl_awk_probe" </dev/null` in + gl_awk_probe='BEGIN { if ("POSIXLY_CORRECT" in ENVIRON) print "x" }' + case ${POSIXLY_CORRECT+x}`$AWK "$gl_awk_probe" </dev/null` in xx) gl_had_POSIXLY_CORRECT=exported ;; x) gl_had_POSIXLY_CORRECT=yes ;; *) gl_had_POSIXLY_CORRECT= ;;