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43 lines
1.4 KiB
Plaintext
43 lines
1.4 KiB
Plaintext
dnl @ ../doc/m4.texinfo:2900: 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(`cond',
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`ifelse(`$#', `1', `$1',
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`ifelse($1, `$2', `$3',
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`$0(shift(shift(shift($@))))')')')dnl
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define(`side', `define(`counter', incr(counter))$1')dnl
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define(`example1',
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`define(`counter', `0')dnl
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ifelse(side(`$1'), `yes', `one comparison: ',
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side(`$1'), `no', `two comparisons: ',
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side(`$1'), `maybe', `three comparisons: ',
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`side(`default answer: ')')counter')dnl
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define(`example2',
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`define(`counter', `0')dnl
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cond(`side(`$1')', `yes', `one comparison: ',
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`side(`$1')', `no', `two comparisons: ',
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`side(`$1')', `maybe', `three comparisons: ',
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`side(`default answer: ')')counter')dnl
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example1(`yes')
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dnl @result{}one comparison: 3
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example1(`no')
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dnl @result{}two comparisons: 3
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example1(`maybe')
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dnl @result{}three comparisons: 3
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example1(`feeling rather indecisive today')
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dnl @result{}default answer: 4
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example2(`yes')
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dnl @result{}one comparison: 1
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example2(`no')
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dnl @result{}two comparisons: 2
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example2(`maybe')
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dnl @result{}three comparisons: 3
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example2(`feeling rather indecisive today')
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dnl @result{}default answer: 4
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