This is great QM ! I had to make one change due to the order that keys are pulled out of a hash. I changed the code from: 
foreach my $path ( keys %paths )
{

[download]
to: 
# : N.B. We explicitly iterate over the paths in order of the
#   number of directory components.  This is so we don't create
#   directories for a child path before creating directories for a
#   parent path.

# : sort the keys to %path by the number of directory components and
#   then by a string compare.  (both comparisons are ascending.)
my @sorted_paths = sort { $a =~ tr/\\// <=> $b =~ tr/\\//  ||
                          $a cmp $b
                        } keys %paths;

# : foreach $path in the @sorted_paths array
    foreach my $path (@sorted_paths) {

[download]

In reply to Re^2: Finding nested directories from a string list. by superfrink
in thread Finding nested directories from a string list. by superfrink

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