From: Zack Weinberg <zackw@panix.com>
Date: Sat, 10 Oct 2020 18:07:53 +0000 (-0400)
Subject: _AS_PATH_WALK: Use AS_IF for IF-NOT-FOUND argument.
X-Git-Tag: v2.69d~17
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d85fc04ed3961f4195b632cd81b89a51216dbea7;p=thirdparty%2Fautoconf.git

_AS_PATH_WALK: Use AS_IF for IF-NOT-FOUND argument.

The construct _AS_PATH_WALK was using to conditionally execute its
IF-NOT-FOUND argument, was a little too fragile: relatively natural
variations in usage, such as putting the final `])` on a line by
itself, could cause shell syntax errors.  Use AS_IF instead.

* lib/m4sugar/m4sh.m4: Use AS_IF to execute IF-NOT-FOUND conditionally.
---

diff --git a/lib/m4sugar/m4sh.m4 b/lib/m4sugar/m4sh.m4
index bd4d2b9e..a1c1cd47 100644
--- a/lib/m4sugar/m4sh.m4
+++ b/lib/m4sugar/m4sh.m4
@@ -1363,7 +1363,7 @@ do
   m4_ifvaln([$3], [as_found=false])dnl
 done
 IFS=$as_save_IFS
-m4_ifvaln([$3], [$as_found || { $3; }])dnl
+m4_ifvaln([$3], [AS_IF([$as_found], [], [$3])])dnl
 ])