1 files changed, 67 insertions, 0 deletions
diff --git a/testsuite/posix-char-class.sh b/testsuite/posix-char-class.sh
new file mode 100644
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+++ b/testsuite/posix-char-class.sh
@@ -0,0 +1,67 @@
+#!/bin/sh
+# Test character-class definitions in POSIX mode.
+
+# Copyright (C) 2016 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/>.
+
+# NOTE:
+# In GNU Extension mode, all text is normalized (e.g. backslash-X combinations).
+# In POSIX mode, normalize_text() ensures content of character
+# classes is not normalized.
+#
+# Compare:
+#   $ printf "t\t\n" | sed 's/[\t]/X/' | od -a
+#   0000000  t   X   nl
+#   $ printf "t\t\n" | sed --posix 's/[\t]/X/' | od -a
+#   0000000  X   ht  nl
+#
+# This test unit validates the special handling of character classes
+# in posix mode (compile.c:normalize_text() implementation).
+
+
+. "${srcdir=.}/testsuite/init.sh"; path_prepend_ ./sed
+print_ver_ sed
+
+fail=0
+
+echo X > exp || framework_failure_
+
+# Closing bracket without opening bracket, match as-is
+echo ']' | sed --posix 's/]/X/' > out1 || fail=1
+compare_ exp out1 || fail=1
+
+# Two opening brackets (same state when opening the second one)
+echo '[' | sed --posix 's/[[]/X/' > out2 || fail=1
+compare_ exp out2 || fail=1
+
+# Escaping before and after the character class, but not inside it (POSIX MODE)
+printf "\tt\t\n" | sed --posix 's/\t[\t]\t/X/' > out3 || fail=1
+compare_ exp out3 || fail=1
+
+# Escaping before, inside, and after the character class (GNU MODE)
+printf "\t\t\t\n" | sed  's/\t[\t]\t/X/' > out4 || fail=1
+compare_ exp out4 || fail=1
+
+# Special characters, but outside a valid character-class syntax
+printf "=\n" | sed --posix 's/[.=:.]/X/' > out5 || fail=1
+compare_ exp out5 || fail=1
+
+# A valid character class definition
+printf "b\n" | sed --posix 's/[[:alpha:]]/X/' > out6 || fail=1
+compare_ exp out6 || fail=1
+
+
+
+Exit $fail