[PATCH] {maint} aclocal: error out again on unrecognized arguments

[Stefano Lattarini]

Starting from commit v1.11-662-g52246cc of XXX, "XXX", aclocal has
been silently ignoring non-option arguments instead of correctly
reporting them.  Fix this regression.

* t/aclocal.sh: Update to catch the regression.
* aclocal.in (parse_arguments): Explicitly reject non-option arguments.
* NEWS: Update.

Signed-off-by: Stefano Lattarini <address@hidden>
---

 I will push by tomorrow if there is no objection.

 Regards,
   Stefano

 NEWS         |    5 +++++
 aclocal.in   |    6 ++++++
 t/aclocal.sh |    5 +++++
 3 files changed, 16 insertions(+)

diff --git a/NEWS b/NEWS
index e7570d0..22dedaa 100644
--- a/NEWS
+++ b/NEWS
@@ -67,6 +67,11 @@ Bugs fixed in 1.12.1:
    - Several weaknesses in the Automake's own build system test suite
      have been fixed.
 
+* Bugs introduced by 1.11.3:
+
+  - When given non-option arguments, aclocal rejects them, instead of
+    silently ignoring them.
+
 * Long-standing bugs:
 
   - When the 'color-tests' option is in use, forcing of colored testsuite
diff --git a/aclocal.in b/aclocal.in
index 09e1da4..dfb851b 100644
--- a/aclocal.in
+++ b/aclocal.in
@@ -982,6 +982,12 @@ sub parse_arguments ()
   use Automake::Getopt ();
   Automake::Getopt::parse_options %cli_options;
 
+  if (@ARGV > 0)
+    {
+      fatal ("non-option arguments are not accepted: '$ARGV[0]'.\n"
+             . "Try '$0 --help' for more information.");
+    }
+
   if ($print_and_exit)
     {
       print "@system_includes\n";
diff --git a/t/aclocal.sh b/t/aclocal.sh
index 4030b13..3e0cac6 100755
--- a/t/aclocal.sh
+++ b/t/aclocal.sh
@@ -34,6 +34,11 @@ cat stderr >&2
 grep 'unrecognized option.*--unknown-option' stderr
 grep '[Tt]ry.*--help.*for more information' stderr
 
+$ACLOCAL foobar 2>stderr && { cat stderr >&2; Exit 1; }
+cat stderr >&2
+grep 'non-option argument.*foobar' stderr
+grep '[Tt]ry.*--help.*for more information' stderr
+
 $ACLOCAL --ver 2>stderr && { cat stderr >&2; Exit 1; }
 cat stderr >&2
 grep 'unrecognized option.*--ver' stderr
-- 
1.7.9.5