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29 lines
741 B
Bash
Executable File
29 lines
741 B
Bash
Executable File
#! /bin/sh
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# Before grep-2.19, grep -P and -w/-x would not work with a back-reference.
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#
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# Copyright (C) 2014-2026 Free Software Foundation, Inc.
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#
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# Copying and distribution of this file, with or without modification,
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# are permitted in any medium without royalty provided the copyright
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# notice and this notice are preserved.
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. "${srcdir=.}/init.sh"; path_prepend_ ../src
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require_pcre_
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echo aa > in || framework_failure_
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echo 'grep: reference to non-existent subpattern' > exp-err \
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|| framework_failure_
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fail=0
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for xw in x w; do
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grep -P$xw '(.)\1' in > out 2>&1 || fail=1
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compare out in || fail=1
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grep -P$xw '(.)\2' in > out 2> err && fail=1
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compare /dev/null out || fail=1
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compare exp-err err || fail=1
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done
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Exit $fail
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