File autoconf-2.67-fix_dnl.patch of Package autoconf

From f6030a3204a9b87e9b346e6eff4ce1117382fc86 Mon Sep 17 00:00:00 2001
From: Eric Blake <eblake@redhat.com>
Date: Thu, 16 Sep 2010 08:43:27 -0600
Subject: [PATCH] m4sugar: fix regression in AC_MSG_ERROR expansion

AS_ERROR Regression introduced in commit cffdc3947, but the
underlying problem stems from the introduction of m4_defun_init
in commit d0c5f482.

* lib/m4sugar/m4sugar.m4 (m4_defun_init): Avoid macro
concatenation on subsequent expansions
* tests/m4sh.at (AS_WARN and AS_ERROR): New test.
* tests/m4sugar.at (m4@&t@_require: one-shot initialization):
Enhance test.
* NEWS: Document the fix.
* THANKS: Update.
Reported by Adrian Bunk and and Nishio Futoshi.

diff --git a/lib/m4sugar/m4sugar.m4 b/lib/m4sugar/m4sugar.m4
index 95b7bcf..d440127 100644
--- a/lib/m4sugar/m4sugar.m4
+++ b/lib/m4sugar/m4sugar.m4
@@ -1973,7 +1973,7 @@ m4_define([m4_defun],
 # m4_defun'd, we can add a parameter, similar to the third parameter
 # to m4_defun.
 m4_define([m4_defun_init],
-[m4_define([$1], [$3])m4_defun([$1],
+[m4_define([$1], [$3[]])m4_defun([$1],
    [$2[]_m4_popdef(]m4_dquote($[0])[)m4_indir(]m4_dquote($[0])dnl
 [m4_if(]m4_dquote($[#])[, [0], [], ]m4_dquote([,$]@)[))], [m4_pushdef])])
 
diff --git a/tests/m4sh.at b/tests/m4sh.at
index e73c971..08680c3 100644
--- a/tests/m4sh.at
+++ b/tests/m4sh.at
@@ -18,6 +18,71 @@ AT_BANNER([M4sh.])
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+## ------------------- ##
+## AS_WARN, AS_ERROR.  ##
+## ------------------- ##
+
+AT_SETUP([AS@&t@_WARN and AS@&t@_ERROR])
+AT_KEYWORDS([m4sh])
+
+dnl without logging
+AT_DATA_M4SH([script.as],
+[[AS_INIT
+AS_WARN([*watch out*])dnl
+
+if test x"$die" != x; then
+  AS_ERROR([you're dead])dnl
+
+  AS_ERROR([really])dnl
+
+fi
+echo got here
+]])
+
+AT_CHECK_M4SH
+AT_CHECK([$CONFIG_SHELL ./script], [],
+[[got here
+]], [[script: WARNING: *watch out*
+]])
+AT_CHECK([die=: $CONFIG_SHELL ./script], [1],
+[], [[script: WARNING: *watch out*
+script: error: you're dead
+]])
+
+dnl with logging
+rm script
+AT_DATA_M4SH([script.as],
+[[AS_INIT
+m4_define([gone], [AS_ERROR([really])])
+m4_define([AS_MESSAGE_LOG_FD], [5])
+exec AS_MESSAGE_LOG_FD>log.txt
+AS_WARN([*watch out*])dnl
+
+if test x"$die" != x; then
+  AS_ERROR([you're dead])dnl
+
+  AS_ERROR([really])dnl
+
+fi
+echo got here
+exec AS_MESSAGE_LOG_FD>&-
+]])
+
+AT_CHECK_M4SH
+AT_CHECK([$CONFIG_SHELL ./script], [],
+[[got here
+]], [[script: WARNING: *watch out*
+]])
+AT_CHECK([[grep 'script:[0-9]*: WARNING: \*watch out\*' log.txt]], [], [ignore])
+AT_CHECK([die=: $CONFIG_SHELL ./script], [1],
+[], [[script: WARNING: *watch out*
+script: error: you're dead
+]])
+AT_CHECK([[grep 'script:[0-9]*: WARNING: \*watch out\*' log.txt]], [], [ignore])
+AT_CHECK([[grep 'script:[0-9]*: error: you'\''re dead' log.txt]], [], [ignore])
+
+AT_CLEANUP
+
 ## ---------------- ##
 ## LINENO support.  ##
 ## ---------------- ##
@@ -95,7 +160,6 @@ AT_CHECK([sh ./test/test-2],                       0, [expout])
 AT_CLEANUP
 
 
-
 ## ---------------------- ##
 ## LINENO stack support.  ##
 ## ---------------------- ##
diff --git a/tests/m4sugar.at b/tests/m4sugar.at
index 50a7b00..900bc3b 100644
--- a/tests/m4sugar.at
+++ b/tests/m4sugar.at
@@ -460,13 +460,15 @@ AT_KEYWORDS([m4@&t@_defun_init m4@&t@_copy m4@&t@_defun_once])
 
 dnl check out m4_defun_init, m4_copy, and odd macro names
 AT_CHECK_M4SUGAR_TEXT([[
+m4_define([t], [text])dnl
 m4_defun_init([a], [[init a
-]], [[common a]])dnl
+]], [[common a] t])dnl
 m4_defun([b], [[b]m4_require([a])])dnl
 m4_defun([c], [[c]m4_require([a])])dnl
 b
 c
-a
+a()dnl
+
 m4_defun_init([-], [hello, ], [m4_if([$#], [0], [world], [[$1]])])dnl
 m4_copy([-], [.])dnl
 m4_indir([.])
@@ -474,10 +476,10 @@ m4_indir([.], [goodbye])
 m4_indir([-], [again])
 ]], [[
 init a
-common a
+common a text
 b
 c
-common a
+common a text
 hello, world
 goodbye
 hello, again
-- 
1.7.1