Ah, but they are punct if they appear as [ or ] (singles). Also, they qualify as punct if they appear as pairs out of order: ]] stuff [[. They would also be punct if you just had [[ and no matching ]]. They would also be punct if they appeared as [[]]-- you can't have a link to absolutely nothing. :)
So far I'm solving the problem by simply forcing punct to be a single character instead: /[^\w\s]/. That way the punct rule doesn't eat up my string before it can run the token test on relevant pieces, since token is checked before punct. What I was kind of hoping for was a way to use a negative lookahead of some sort... or a way to build an extra rule layer that would somehow account for this.
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