sub sort_files {
        # if both in the same folder and one is folder, put it top
        if ($$a{'dir'} eq $$b{'dir'}) {

this if only compares whether the hash claims that they are in what you call "dir" - here it is always "/c", hence you will put all folders on top and all files below.

What you need - and that's why I asked beforehand - is some way of finding out that files are either in your "main"/parent directory (then sort them downwards) or if they are in a subdir (then list them directly below their subdirectory).
Regards,
svenXY

In reply to Re: sorting tree with folders on top by svenXY
in thread sorting tree with folders on top by diweooy

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