42 lines
1020 B
Plaintext
42 lines
1020 B
Plaintext
dnl @ ../doc/m4.texi:4827: Origin of test
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dnl @ expected status: 0
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dnl @ extra options:
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dnl @ Copyright (C) 2006, 2007, 2008, 2009 Free Software
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dnl @ Foundation, Inc.
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dnl @ This file is free software; the Free Software Foundation
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dnl @ gives unlimited permission to copy and/or distribute it
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dnl @ with or without modifications, as long as this notice
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dnl @ is preserved.
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ifdef(`changeword', `', `errprint(` skipping: no changeword support
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')m4exit(`77')')dnl
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define(`abc
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', `bar
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')
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dnl @result{}
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dnl This example wants to recognize changeword, dnl, and `abc\n'.
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dnl First, we check that our regexp will match.
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regexp(`changeword', `[cd][a-z]*\|abc[
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]')
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dnl @result{}0
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regexp(`abc
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', `[cd][a-z]*\|abc[
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]')
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dnl @result{}0
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regexp(`a', `[cd][a-z]*\|abc[
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]')
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dnl @result{}-1
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abc
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dnl @result{}abc
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changeword(`[cd][a-z]*\|abc[
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]')
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dnl @result{}
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dnl Even though `abc\n' matches, we forgot to allow `ab'.
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abc
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dnl @result{}abc
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changeword(`[cd][a-z]*\|ab?c?[
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]?')
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dnl @result{}
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dnl Now we can call `abc\n'.
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abc
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dnl @result{}bar
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