Comment by verdverm

You didn't understand the query

How does yours compare to regexp on performance across many inputs?

Regexp is incredibly fast, I doubt yours comes anywhere close

and then there's the kicker, Ai are really good at crafting regexp, better than writing code to replace it, that's for sure

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looks like the comment I am replying to has changed the link, it was this one: https://matchlang.com/docs/api/performance

Note to OP, use standard regexp benchmarks