Ick at the $#_, that is shocking coding when you can write: 
foreach (@_) {
   # use $_ here 
}

[download]
And what's wrong with:
foreach my $some_path (@$path_list) {
   # etc
}

[download]
Have you looked into using File::Spec (standard with Perl I think). I think using canonpath and/or no_upwards might do what you're looking for in an easier to maintain and more portable manner.

Hope this helps...

gav^

In reply to Re: How could I check if a variable is 'read-only'? by gav^
in thread How could I check if a variable is 'read-only'? by vladb

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