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dnl @ ../doc/m4.texinfo:3199: Origin of test
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dnl @ Copyright (C) 2006 Free Software Foundation
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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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ifdef(`changeword', `', `errprint(` skipping: no changeword support
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define(`_indir', defn(`indir'))
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changeword(`_[_a-zA-Z0-9]*')
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dnl @result{}esyscmd(foo)
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_indir(`esyscmd', `echo hi')