As always, the Devil is in the details. Unless and until you can make clear (first to yourself, then to others) the meaning of the phrase "an approximate match to a regex", you may make but little progress. To me, for instance, the notion of a "regex match" already incorporates vague notions of fuzzyness and approximation. Just what does it mean to add approximation to approximation, or to measure its degree?

In reply to Re^3: approximate regular expression by AnomalousMonk
in thread approximate regular expression by jrblas

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