dnl @ ../doc/m4.texinfo:2873: 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.
m4wrap(`m4wrap(`)')len(abc')
dnl @result{}
dnl @error{}m4: ERROR: end of file in argument list