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dnl @ ../doc/m4.texinfo:969: Origin of test
dnl @ expected status: 0
dnl @ extra options:
dnl @ Copyright (C) 2006, 2007, 2008, 2009 Free Software
dnl @ Foundation, Inc.
dnl @ This file is free software; the Free Software Foundation
dnl @ gives unlimited permission to copy and/or distribute it
dnl @ with or without modifications, as long as this notice
dnl @ is preserved.
dnl @ expected error: ignore
ifdef(`__unix__', ,
`errprint(` skipping: syscmd does not have unix semantics
')m4exit(`77')')dnl
changequote(`[', `]')dnl
syscmd([echo | ']__program__[' >&-])dnl
dnl @error{}m4: write error: Bad file descriptor
sysval
dnl @result{}1
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