22 lines
657 B
Plaintext
22 lines
657 B
Plaintext
dnl @ ../doc/m4.texi:6364: 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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define(`_counter', `-1')dnl
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define(`counter', `ifelse(`$#', `0', `define(`_$0', incr(_$0))_$0`'',
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`define(`_$0', eval(`$1-1'))')')
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dnl @result{}
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counter counter counter
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dnl @result{}0 1 2
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counter(`42')
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dnl @result{}
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counter counter
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dnl @result{}42 43
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counter()counter
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dnl @result{}0
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