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To: Paul Eggert <eggert@twinsun.com>
Cc: pws@csr.com, zsh-workers@sunsite.dk, ab@purdue.edu, bug-autoconf@gnu.org,
   autoconf-patches@gnu.org
Subject: Re: Zsh 3 and ${1+"$@"} (Was: [GNU Autoconf 2.53] testsuite.log: 126 failures)
References: <28811.1018353588@csr.com>
	<mv4bscrtuu2.fsf@nostromo.lrde.epita.fr>
	<200204101709.g3AH9jU08018@shade.twinsun.com>
From: Akim Demaille <akim@epita.fr>
Date: 10 Apr 2002 19:32:46 +0200
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Message-ID: <mv4ofgrsblt.fsf@nostromo.lrde.epita.fr>
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Sender: Akim Demaille <akim@lrde.epita.fr>

>>>>> "Paul" == Paul Eggert <eggert@twinsun.com> writes:

Paul> This line seems incorrect to me.  Shouldn't it be:

>> + alias -g '${1+"$@"}'='"$@"'

Paul> ?

Yep, thanks!  Well, rm it, make, and cvs diff below.  Was not
regenerated at some point :(

Index: bin/autoconf.in
===================================================================
RCS file: /cvsroot/autoconf/autoconf/bin/autoconf.in,v
retrieving revision 1.145
diff -u -u -r1.145 autoconf.in
--- bin/autoconf.in 10 Apr 2002 15:58:19 -0000 1.145
+++ bin/autoconf.in 10 Apr 2002 17:31:42 -0000
@@ -1,26 +1,79 @@
 #! /bin/sh
-if (basename /) >/dev/null 2>&1 && test "X`basename / 2>&1`" = "X/"; then
-  as_basename=basename
+## --------------------- ##
+## M4sh Initialization.  ##
+## --------------------- ##
+
+# Be Bourne compatible
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh performs word splitting on ${1+"$@"}, which is contrary to
+  # our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
+  set -o posix
+fi
+
+# NLS nuisances.
+# Support unset when possible.
+if (FOO=FOO; unset FOO) >/dev/null 2>&1; then
+  as_unset=unset
 else
-  as_basename=false
+  as_unset=false
 fi
 
+(set +x; test -n "`(LANG=C; export LANG) 2>&1`") &&
+    { $as_unset LANG || test "${LANG+set}" != set; } ||
+      { LANG=C; export LANG; }
+(set +x; test -n "`(LC_ALL=C; export LC_ALL) 2>&1`") &&
+    { $as_unset LC_ALL || test "${LC_ALL+set}" != set; } ||
+      { LC_ALL=C; export LC_ALL; }
+(set +x; test -n "`(LC_TIME=C; export LC_TIME) 2>&1`") &&
+    { $as_unset LC_TIME || test "${LC_TIME+set}" != set; } ||
+      { LC_TIME=C; export LC_TIME; }
+(set +x; test -n "`(LC_CTYPE=C; export LC_CTYPE) 2>&1`") &&
+    { $as_unset LC_CTYPE || test "${LC_CTYPE+set}" != set; } ||
+      { LC_CTYPE=C; export LC_CTYPE; }
+(set +x; test -n "`(LANGUAGE=C; export LANGUAGE) 2>&1`") &&
+    { $as_unset LANGUAGE || test "${LANGUAGE+set}" != set; } ||
+      { LANGUAGE=C; export LANGUAGE; }
+(set +x; test -n "`(LC_COLLATE=C; export LC_COLLATE) 2>&1`") &&
+    { $as_unset LC_COLLATE || test "${LC_COLLATE+set}" != set; } ||
+      { LC_COLLATE=C; export LC_COLLATE; }
+(set +x; test -n "`(LC_NUMERIC=C; export LC_NUMERIC) 2>&1`") &&
+    { $as_unset LC_NUMERIC || test "${LC_NUMERIC+set}" != set; } ||
+      { LC_NUMERIC=C; export LC_NUMERIC; }
+(set +x; test -n "`(LC_MESSAGES=C; export LC_MESSAGES) 2>&1`") &&
+    { $as_unset LC_MESSAGES || test "${LC_MESSAGES+set}" != set; } ||
+      { LC_MESSAGES=C; export LC_MESSAGES; }
+
+
+# Required to use basename.
 if expr a : '\(a\)' >/dev/null 2>&1; then
   as_expr=expr
 else
   as_expr=false
 fi
 
-# Be Bourne compatible
-if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
-  emulate sh
-  NULLCMD=:
-  # Zsh performs word splitting on ${1+""}, which is contrary to
-  # our usage.  Disable this feature.
-  alias -g '${1+""}'='""'
-elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
-  set -o posix
+if (basename /) >/dev/null 2>&1 && test "X`basename / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
 fi
+
+
+# Name of the executable.
+as_me=`$as_basename "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)$' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{ s//\1/; q; }
+  	  /^X\/\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\/\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+
 
 # autoconf -- create `configure' using m4 macros
 # Copyright (C) 1992, 1993, 1994, 1996, 1999, 2000, 2001, 2002