[SCM] GNU Autoconf source repository branch, master, updated. v2.63-133-ge752d8d

[Eric Blake]

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- Log -----------------------------------------------------------------
commit e752d8d90fbf30e34337a7a07b99e5dc45e50e37
Author: Eric Blake <address@hidden>
Date:   Wed Oct 29 15:44:28 2008 -0600

    Mention proper fix for zsh users.
    
    * lib/m4sugar/m4sh.m4 (_AS_DETECT_BETTER_SHELL): Recommend zsh
    version known to work.
    Suggested by Paolo Bonzini.
    
    Signed-off-by: Eric Blake <address@hidden>

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog           |    5 +++++
 lib/m4sugar/m4sh.m4 |   15 ++++++++++-----
 2 files changed, 15 insertions(+), 5 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index c59bb94..682b919 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
 2008-10-29  Eric Blake  <address@hidden>
 
+       Mention known zsh bug.
+       * lib/m4sugar/m4sh.m4 (_AS_DETECT_BETTER_SHELL): Recommend zsh
+       version known to work.
+       Suggested by Paolo Bonzini.
+
        Document current beta-quality status.
        * configure.ac: Reflect fact that change to git-version-gen
        produces -, but not always a letter, on non-release builds.
diff --git a/lib/m4sugar/m4sh.m4 b/lib/m4sugar/m4sh.m4
index a9b6aec..341a289 100644
--- a/lib/m4sugar/m4sh.m4
+++ b/lib/m4sugar/m4sh.m4
@@ -238,14 +238,19 @@ dnl Remove any tests from suggested that are also required
 
 dnl Unfortunately, $as_me isn't available here.
     AS_IF([test x$as_have_required = xno],
-      [AS_ECHO("m4_text_wrap([This script requires a shell more modern than
-all the shells that I found on your system.  Please tell]
-m4_defn([m4_PACKAGE_BUGREPORT])
-m4_ifset([AC_PACKAGE_BUGREPORT], [m4_if(m4_defn([m4_PACKAGE_BUGREPORT]),
-m4_defn([AC_PACKAGE_BUGREPORT]), [], [ and m4_defn([AC_PACKAGE_BUGREPORT])])])
+      [AS_ECHO(["$[]0: This script requires a shell more modern than all"])
+  AS_ECHO(["$[]0: the shells that I found on your system."])
+  if test x${ZSH_VERSION+set} = xset ; then
+    AS_ECHO(["$[]0: In particular, zsh $ZSH_VERSION has bugs and should"])
+    AS_ECHO(["$[]0: be upgraded to zsh 4.3.4 or later."])
+  else
+    AS_ECHO("m4_text_wrap([Please tell ]_m4_defn([m4_PACKAGE_BUGREPORT])
+m4_ifset([AC_PACKAGE_BUGREPORT], [m4_if(_m4_defn([m4_PACKAGE_BUGREPORT]),
+_m4_defn([AC_PACKAGE_BUGREPORT]), [], [and _m4_defn([AC_PACKAGE_BUGREPORT])])])
 [about your system, including any error possibly output before this message.
 Then install a modern shell, or manually run the script under such a
 shell if you do have one.], [$[]0: ], [], [62])")
+  fi
       AS_EXIT(1)])])
 fi
 _m4_popdef([AS_EXIT])])# _AS_DETECT_BETTER_SHELL


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