[PATCH 1/4] tests: exercise latent bug in character ranges

[Paolo Bonzini]

* tests/bogus-wctob: New.
* Makefile.am (TESTS): Add it.
---
 tests/Makefile.am |    1 +
 tests/bogus-wctob |   17 +++++++++++++++++
 2 files changed, 18 insertions(+), 0 deletions(-)
 create mode 100644 tests/bogus-wctob

diff --git a/tests/Makefile.am b/tests/Makefile.am
index f354e4a..22bad3e 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -39,6 +39,7 @@ TESTS =                                               \
   backref-multibyte-slow                       \
   backref-word                                 \
   bre                                          \
+  bogus-wctob                                  \
   case-fold-backref                            \
   case-fold-backslash-w                                \
   case-fold-char-class                         \
diff --git a/tests/bogus-wctob b/tests/bogus-wctob
new file mode 100644
index 0000000..0237062
--- /dev/null
+++ b/tests/bogus-wctob
@@ -0,0 +1,17 @@
+#!/bin/sh
+# This was latent in grep-2.8 and earlier because we punted interpretation
+# of MBCSETs to glibc.  However, it becomes apparent as soon "[à]" is
+# simplified to "à".
+. "${srcdir=.}/init.sh"; path_prepend_ ../src
+
+printf '\340'      > in || framework_failure_
+fail=0
+
+LC_ALL=en_US.UTF-8 grep '[à]' in
+case $? in
+  0) fail=1 ;;
+  1) ;;
+  2) framework_failure_ unexpected error from grep ;;
+esac
+
+Exit $fail
-- 
1.7.4.4