1 dnl @ ../doc/m4.texi:6852: Origin of test
2 dnl @ expected status: 0
4 dnl @ Copyright (C) 2006, 2007, 2008, 2009 Free Software
6 dnl @ This file is free software; the Free Software Foundation
7 dnl @ gives unlimited permission to copy and/or distribute it
8 dnl @ with or without modifications, as long as this notice
10 define(`foo', `errprint(`oops')')
12 syscmd(`rm -f foo-??????')sysval
14 define(`file1', maketemp(`foo-XXXXXX'))dnl
15 ifelse(esyscmd(`echo \` foo-?????? \''), ` foo-?????? ',
18 define(`file2', maketemp(`foo-XX'))dnl
19 define(`file3', mkstemp(`foo-XXXXXX'))dnl
20 ifelse(len(defn(`file1')), len(defn(`file2')),
21 `same length', `different')
22 dnl @result{}same length
23 ifelse(defn(`file1'), defn(`file2'), `same', `different file')
24 dnl @result{}different file
25 ifelse(defn(`file2'), defn(`file3'), `same', `different file')
26 dnl @result{}different file
27 ifelse(defn(`file1'), defn(`file3'), `same', `different file')
28 dnl @result{}different file
29 syscmd(`rm 'defn(`file1') defn(`file2') defn(`file3'))