[SCM] GNU Autoconf source repository branch, master, updated. v2.69-119-g3f98a56

[Eric Blake]

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- Log -----------------------------------------------------------------
commit 3f98a56621eebfa4abe55affa9138cc4b1355901
Author: Eric Blake <address@hidden>
Date:   Fri May 30 08:55:10 2014 -0600

    AC_INIT: quote invalid feature names
    
    Changes:
       configure: error: invalid feature name: debug
    to
       configure: error: invalid feature name: `debug '
    to make it obvious if trailing space is the reason why a feature
    name was rejected; similar to existing error messages elsewhere
    about invalid shell variable names.
    
    * lib/autoconf/general.m4 (_AC_INIT_PARSE_ENABLE2): Add quotes.
    Reported by Noel Grandin.
    
    Signed-off-by: Eric Blake <address@hidden>

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

Summary of changes:
 lib/autoconf/general.m4 |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/autoconf/general.m4 b/lib/autoconf/general.m4
index e2e9b6a..696a9a1 100644
--- a/lib/autoconf/general.m4
+++ b/lib/autoconf/general.m4
@@ -998,8 +998,8 @@ m4_define([_AC_INIT_PARSE_ENABLE2],
     ac_useropt=`expr "x$ac_option" : 'x-*$1-\(m4_if([$1], [$2], [[[^=]]], 
[.])*\)'`
     # Reject names that are not valid shell variable names.
     expr "x$ac_useropt" : "[.*[^-+._$as_cr_alnum]]" >/dev/null &&
-      AC_MSG_ERROR(
-       [invalid ]m4_if([$2], [with], [package], [feature])[ name: $ac_useropt])
+      AC_MSG_ERROR([invalid ]m4_if([$2], [with],
+        [package], [feature])[ name: `$ac_useropt'])
     ac_useropt_orig=$ac_useropt
     ac_useropt=`AS_ECHO(["$ac_useropt"]) | sed 's/[[-+.]]/_/g'`
     case $ac_user_opts in


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