dnl @ ../doc/m4.texi:1766: Origin of test
dnl @ expected status: 0
dnl @ extra options:  -Dfoo -Decho=$@
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.
foo
dnl @result{}
foo(`silently ignored')
dnl @result{}
echo(`1', `2')
dnl @result{}1,2