Re: [SCM] GNU Autoconf source repository branch, master, updated. v2.63-197-g291d709

[Ralf Wildenhues]

* Paolo Bonzini wrote on Sun, Nov 16, 2008 at 10:53:32PM CET:
> 
> Or use `expr "$[]@" || test $? = 1` if it is portable.

Thanks, that's better.  I pushed this.
It is portable in the sense that, there are shells which won't propagate
the exit status to outside the `...` anyway, but I don't see what we can
do about that except parse "$@" ourselves maybe.

Cheers,
Ralf

    Simplify, avoid unbalanced parentheses from last change.
    
    * lib/m4sugar/m4sh.m4 (_AS_VAR_ARITH_PREPARE): Simplify, avoid
    unbalanced parentheses from last change.
    Spotted by Eric Blake, fix suggested by Paolo Bonzini.

diff --git a/lib/m4sugar/m4sh.m4 b/lib/m4sugar/m4sh.m4
index 56697ad..2c592c6 100644
--- a/lib/m4sugar/m4sh.m4
+++ b/lib/m4sugar/m4sh.m4
@@ -1742,8 +1742,7 @@ 
AS_IF([_AS_RUN(["AS_ESCAPE(m4_quote(_AS_VAR_ARITH_WORKS))"])],
   }'],
 [as_func_arith ()
   {
-    as_val=`expr "$[]@"`
-    case $? in 0|1) :;; *) false;; esac
+    as_val=`expr "$[]@" || test $? -eq 1`
   }]) # as_func_arith
 ])