_AC_INIT_PARSE_ENABLE fixup

[Paul Eggert]

I installed this to fix some bugs introduced by the
<http://lists.gnu.org/archive/html/autoconf-patches/2006-11/msg00020.html>
patch:

2006-11-16  Paul Eggert  <address@hidden>

        * lib/autoconf/general.m4 (_AC_INIT_PARSE_ENABLE): Fix some typos
        in previous change, which caused test failures.

--- lib/autoconf/general.m4     17 Nov 2006 00:16:27 -0000      1.938
+++ lib/autoconf/general.m4     17 Nov 2006 00:37:03 -0000
@@ -925,12 +925,12 @@
 #
 m4_define([_AC_INIT_PARSE_ENABLE],
 [-$1-* | --$1-*)
-    ac_$2=`expr "x$ac_option" : 'x-*$1-\(.*\)'`
+    ac_$2=`expr "x$ac_option" : 'x-*$1-\(m4_bmatch([$1], [^\(enable\|with\)$], 
[[[^=]]], [.])*\)'`
     # Reject names that are not valid shell variable names.
     expr "x$ac_$2" : "[.*[^-._$as_cr_alnum]]" >/dev/null &&
       AC_MSG_ERROR([invalid $2 name: $ac_$2])
     [ac_$2=`echo $ac_$2 | sed 's/[-.]/_/g'`]
-    eval with_$ac_$2=$3 ;;dnl
+    eval m4_bmatch([$1], [^\(enable\|disable\)$], [enable], [with])_$ac_$2=$3 
;;dnl
 ])