tests: test [^^-^] in unibyte locales

This is a bug in the current dfa.c, which was reintroduced by the
recent reversion from RRI.
* tests/unibyte-negated-circumflex: New file.
* tests/Makefile.am (TESTS): Add it.
* tests/init.cfg (require_unibyte_locale): New function.

1 files changed, 27 insertions, 0 deletions

diff --git a/tests/unibyte-negated-circumflex b/tests/unibyte-negated-circumflex
new file mode 100755
index 00000000..b6d747c8
--- /dev/null
+++ b/tests/unibyte-negated-circumflex
@@ -0,0 +1,27 @@
+#!/bin/sh
+# Exercise a bug where [^^-^] was treated as if it were [^-^].
+
+# Copyright 2014 Free Software Foundation, Inc.
+
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+require_unibyte_locale
+
+fail=0
+
+echo a >in || framework_failure_
+grep '[^^-^]' in >out || fail=1
+compare out in || fail=1
+Exit $fail