It's not a collaborative project in any way -- Gruber does not accept contributions and repudiates forks + reimplementations. His Markdown.pl implementation is

It's not a collaborative project in any way -- Gruber does not accept contributions and repudiates forks + reimplementations. His Markdown.pl implementation is dogshit even by the already low standards of hand-written many-pass regex-based spaghetti-parsers. It's absolutely his buggy baby.