Perhaps OP could provide a test data set as a __DATA__ block and provide sample output illustrating the expected sort order for the given data? It could well be that test strings will be added as new edge cases are described. Perhaps the first line should be: 0 Data set version 1 so that it is obvious in sample output which "rules" any particular solution has been tested against.

DWIM is Perl's answer to Gödel

In reply to Re: A new golf challenge - Natural Sorting by GrandFather
in thread A new golf challenge - Natural Sorting by theroninwins

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