Re: getopt usage

[Eric Blake]

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According to Eric Blake on 8/13/2009 7:32 AM:
> Gnulib recently separated POSIX getopt from GNU getopt extensions, and
> marked the getopt module obsolete.  This fixes m4 to work with the latest
> gnulib.git again.

And in the process, caused a regression on BSD which doesn't properly
honor the GNU extension of leading '-' in the optstring argument when
POSIXLY_CORRECT is set.

- --
Don't work too hard, make some time for fun as well!

Eric Blake             address@hidden
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>From a6c565c6f4b934be334dd9ada97b215595d10103 Mon Sep 17 00:00:00 2001
From: Eric Blake <address@hidden>
Date: Fri, 27 Nov 2009 21:45:33 -0700
Subject: [PATCH] Work around BSD getopt bug.

* gnulib: Update.
* doc/m4.texinfo (Command line files): Add test.

Signed-off-by: Eric Blake <address@hidden>
---
 ChangeLog      |    4 ++++
 doc/m4.texinfo |   16 ++++++++++++++++
 gnulib         |    2 +-
 3 files changed, 21 insertions(+), 1 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 80f0d6c..0c9b193 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,9 @@
 2009-11-28  Eric Blake  <address@hidden>

+       Work around BSD getopt bug.
+       * gnulib: Update.
+       * doc/m4.texinfo (Command line files): Add test.
+
        Use fastmap for better regex performance.
        * src/input.c (word_start): Delete.
        (pop_wrapup): Free memory on exit.
diff --git a/doc/m4.texinfo b/doc/m4.texinfo
index 2cf86d4..550fa4a 100644
--- a/doc/m4.texinfo
+++ b/doc/m4.texinfo
@@ -989,6 +989,22 @@ Command line files
 @error{}bye
 @result{}0
 @end example
+
address@hidden Test that we obey POSIX semantics with -D interspersed with
address@hidden files, even with POSIXLY_CORRECT (BSD getopt gets it wrong).
+
+$ @kbd{m4 }
address@hidden
+ifdef(`__unix__', ,
+      `errprint(` skipping: syscmd does not have unix semantics
+')m4exit(`77')')dnl
+changequote(`[', `]')dnl
+syscmd([POSIXLY_CORRECT=1 ']__program__[' -Dbar=hello foo -Dbar=world foo])dnl
address@hidden
address@hidden
+sysval
address@hidden
address@hidden example
 @end ignore

 @node Syntax
diff --git a/gnulib b/gnulib
index 23cd741..c0c5acf 160000
--- a/gnulib
+++ b/gnulib
@@ -1 +1 @@
-Subproject commit 23cd74133c81b80d335c701848b71d85a53402c6
+Subproject commit c0c5acfbe255f5542bc1c81c7aec223d95e504a6
-- 
1.6.5.rc1