You are correct that there were problems in the OP's code. Since the OP also showed desired output, I was expecting that posted solutions would actually produce that output. Yours and dreadpiratepeter's solutions produced the desired output, but Jstrom's did not.

Or perhaps I misunderstand.

In reply to Re^4: Progressive matching w/substitutions by broomduster
in thread Progressive matching w/substitutions by argv

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