Index: lib/m4sugar/m4sh.m4
===================================================================
RCS file: /cvsroot/autoconf/autoconf/lib/m4sugar/m4sh.m4,v
retrieving revision 1.118
diff -u -r1.118 m4sh.m4
--- lib/m4sugar/m4sh.m4	27 Jul 2004 20:15:15 -0000	1.118
+++ lib/m4sugar/m4sh.m4	28 Jul 2004 16:57:21 -0000
@@ -162,8 +162,10 @@
   # is contrary to our usage.  Disable this feature.
   alias -g '${1+"address@hidden"}'='"address@hidden"'
   setopt NO_GLOB_SUBST
-elif test -n "${BASH_VERSION+set}${KSH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
+elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
   set -o posix
+elif test -n "${KSH_VERSION+set}" && (set +o posix) >/dev/null 2>&1; then
+  set +o posix
 fi
 DUALCASE=1; export DUALCASE # for MKS sh
 ])