$filespec[./243/a//b///c////d.txt]
$s[dummy]
^s.save[$filespec]

^if(-f $filespec){file exist<br />}
^if(-f "./243/a/b/c/d.txt"){file exist<br />}
^if(-d ^file:dirname[$filespec]){dir exist<br />}
^if(-d "./243/a/b/c"){dir exist<br />}

^file:delete[$filespec]
^if(!(-d "./243")){dir doesn't exist (it's OK)<br />}