[PATCH] Use "test x$foo = xyes" to avoid upsetting Libtool's sh.test.

[Paolo Bonzini]

Further testing of Libtool revealed the need for this obvious patchlet.
Otherwise, the prolog fails the stricter syntax checking of Libtool's
sh.test.

---
 lib/m4sugar/m4sh.m4 |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

2008-10-15  Paolo Bonzini  <address@hidden>

        * lib/m4sugar/m4sh.m4 (_AS_DETECT_BETTER_SHELL, _AS_SHELL_FN_WORK): Use
        "test x$foo = xyes".

diff --git a/lib/m4sugar/m4sh.m4 b/lib/m4sugar/m4sh.m4
index 0a2abe6..64cc8db 100644
--- a/lib/m4sugar/m4sh.m4
+++ b/lib/m4sugar/m4sh.m4
@@ -202,7 +202,7 @@ dnl Remove any tests from suggested that are also required
     AS_IF([_AS_RUN(["$as_required"])],
          [as_have_required=yes],
          [as_have_required=no])])
-  AS_IF([test $as_have_required = yes && _AS_RUN(["$as_suggested"])],
+  AS_IF([test x$as_have_required = xyes && _AS_RUN(["$as_suggested"])],
     [],
     [as_candidate_shells=
     _AS_PATH_WALK([/bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH],
@@ -233,7 +233,7 @@ dnl Remove any tests from suggested that are also required
        export CONFIG_SHELL
        exec "$CONFIG_SHELL" "$as_myself" ${1+"address@hidden"}])
 
-    AS_IF([test $as_have_required = no],
+    AS_IF([test x$as_have_required = xno],
       [echo This script requires a shell more modern than all the
       echo shells that I found on your system.  Please install a
       echo modern shell, or manually run the script under such a
@@ -377,7 +377,7 @@ AS_IF([as_func_ret_failure],
 AS_IF([( set x; as_func_ret_success y && test x = "[$]1" )], [],
   [exitcode=1
   echo positional parameters were not saved.])
-test $exitcode = 0[]dnl
+test x$exitcode = x0[]dnl
 ])# _AS_SHELL_FN_WORK
 
 
-- 
1.5.5