Re: [Emacs-diffs] master 938d252 4/4: Make regex matching reentrant; update syntax during match

[Richard Stallman]

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  > It's a fairly nice regular expression engine, with excellent
  > performance and the unique feature of doing approximate matching.

Sounds interesting.  I am sure we can modify the code to suit our
needs, if we want to do that.  What is its licensing?
-- 
Dr Richard Stallman
President, Free Software Foundation (https://gnu.org, https://fsf.org)
Internet Hall-of-Famer (https://internethalloffame.org)