dnl @ ../doc/m4.texinfo:1828: Origin of test
dnl @ Copyright (C) 2006 Free Software Foundation
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.
define(`foo', `ifelse(`$#', `0', ``$0'', `arguments:$#')')
dnl @result{}
foo
dnl @result{}foo
foo()
dnl @result{}arguments:1
foo(`a', `b', `c')
dnl @result{}arguments:3