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#! /bin/sh
# Test for back-references and other things.
#
# Copyright (C) 2001, 2006, 2009-2020 Free Software Foundation, Inc.
#
# Copying and distribution of this file, with or without modification,
# are permitted in any medium without royalty provided the copyright
# notice and this notice are preserved.
. "${srcdir=.}/init.sh"; path_prepend_ ../src
failures=0
# checking for a palindrome
echo "radar" | grep -e '\(.\)\(.\).\2\1' > /dev/null 2>&1
if test $? -ne 0 ; then
echo "Backref: palindrome, test #1 failed"
failures=1
fi
# hit hard with the 'Bond' tests
# For now, remove the '?' in the last parentheses, so that new glibc can do it.
# --Stepan
echo "civic" \
| grep -E -e '^(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.?)(.).?\9\8\7\6\5\4\3\2\1$' \
> /dev/null 2>&1
if test $? -ne 0 ; then
echo "Options: Bond, test #2 failed"
failures=1
fi
# backref are local should be error
echo "123" | grep -e 'a\(.\)' -e 'b\1' > /dev/null 2>&1
if test $? -ne 2 ; then
echo "Backref: Backref not local, test #3 failed"
failures=1
fi
# Pattern should fail
echo "123" | grep -e '[' -e ']' > /dev/null 2>&1
if test $? -ne 2 ; then
echo "Backref: Compiled not local, test #4 failed"
failures=1
fi
Exit $failures
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