* configure.ac: While every other sed tested supports usage like
'/\(re\)/{s//\1/;...<NEWLINE>}', and POSIX appears to requires this,
busybox's sed does not support it. So duplicate the regexp:
'/\(re\)/{s/\(re\)/\1/;...<NEWLINE>}'. Reported by Vincent Lefevre:
<http://thread.gmane.org/gmane.comp.gnu.coreutils.bugs/13013>.
# The compromise is to ensure that the space-separated list extracted
# above matches the literal 2nd argument below.
c="$srcdir/configure.ac"
-t=`sed -n '/^g''l_INCLUDE_EXCLUDE_PROG(.* [\[\(.*\)\]])/{s//\1/;s/,/ /gp
+re='^g''l_INCLUDE_EXCLUDE_PROG(.* [\[\(.*\)\]])'
+t=`sed -n '/'"$re"'/{s/'"$re"'/\1/;s/,/ /gp
}' $c`
case $t in
$no_install_progs_default) ;;