I went and looked.
First of all I strongly suggest using strict up at the
top, it will catch even more errors for you. Of course you
need to use vars as well.
After that fixing it to work is just a matter of walking
through and fixing complaints. You have an extra ')'
before a ||. One-line for loops need to either change
the format or need the braces. There are a few undeclared
variables. A few more cases where // is used instead of #
for a comment. A few $ missing. (ie You want --$level
rather than --level.) Your final return statement should
not be there.
All of this is pretty mechanical, but I am loathe to post
the final result since the resulting code is very ugly.
A native Perl version of this would be easy to write and
would look much nicer. Perhaps if I get some time...
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