[PATCH] Fix configure.ac to not to treate [ ] as quotes when using them in case

[Roy Marples <roy@marples.name>]

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Hi list.

Attached is a patch to fix configure on FreeBSD.
This is needed as it uses a shell case statement to test for specific
FreeBSD versions. When run through autotools, it strips the [ ] bit as
it thinks they are quotes.

This fixes Gentoo bug #188930.
http://bugs.gentoo.org/show_bug.cgi?id=188930

Thanks

Roy Marples

PS - I'm not subscribed to this list, so email me directly if you have
queries.

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diff -ur a/configure.ac b/configure.ac
--- a/configure.ac	2007-01-05 13:58:04 +0000
+++ b/configure.ac	2007-08-16 09:17:29 +0100
@@ -2249,6 +2249,10 @@
   zsh_cv_sys_elf=yes,
   zsh_cv_sys_elf=no,
   zsh_cv_sys_elf=yes)])
+  
+  # We use [0-9]* in case statements, so need to change quoting
+  changequote(, )
+
   DL_EXT="${DL_EXT=so}"
   if test x$zsh_cv_sys_elf = xyes; then
     case "$host" in
@@ -2352,6 +2356,10 @@
       esac
     ;;
   esac
+
+  # Done with our shell code, so restore autotools quoting
+  changequote([, ])
+  
   AC_CACHE_CHECK(if your dlsym() needs a leading underscore,
    zsh_cv_func_dlsym_needs_underscore,
    [echo failed >conftestval && cat >conftest.c <<EOM