@main[]
$dir[/tests/270_dir]
#^do[$dir///subdir/270.txt]{file not found (error)}
#^do[/Makefile]{file not found (error)}
^do[Makefile]{file not found (error)}
@do[sFileSpec;*hParams]
^if($hParams){
$result[^file:find[$sFileSpec]{$hParams.0}
]
}{
$result[^file:find[$sFileSpec]
]
}