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| From: | Paolo Bonzini |
| Subject: | Re: POSIXLY_CORRECT not correctly unset in getopt.m4? |
| Date: | Wed, 08 Sep 2010 11:14:08 +0200 |
| User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.10) Gecko/20100621 Fedora/3.0.5-1.fc13 Lightning/1.0b2pre Mnenhy/0.8.3 Thunderbird/3.0.5 |
On 09/07/2010 10:39 PM, Eric Blake wrote:
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
xx) gl_had_POSIXLY_CORRECT=exported ;;
x) gl_had_POSIXLY_CORRECT=yes ;;
*) gl_had_POSIXLY_CORRECT= ;;
esac
Walking all of ENVIRON seems slow. What about
gl_awk_probe='BEGIN {print !!length(ENVIRON["POSIXLY_CORRECT"])}'
case ${POSIXLY_CORRECT:+x}`awk "$gl_awk_probe" </dev/null` in
x1) gl_had_POSIXLY_CORRECT=exported ;;
x0) gl_had_POSIXLY_CORRECT=yes ;;
*) gl_had_POSIXLY_CORRECT= ;;
esac
instead?
Paolo
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