cl-irregsexp

cl-irregsexp is a fast regular expression library with a lispy alternative to traditional syntax for text matching.

License: ???

The current syntax: instead of writing

(register-groups-bind (method url version-major version-minor) 
	  ("(\\S+)\\s+(\\S+)\\s+HTTP/(\\d+).(\\d+)$" line)
	  ...)

write

(match-bind (method (+ (space)) url (+ (space)) "HTTP/" (version-major (integer)) "." (version-minor (integer)) (last))  
          line 
	  ...)

Which might be clearer and doesn't involve mentioning the captured variables twice.

cl-ppcre also has a similar sexpy alternative for its regular expressions called terse-ppcre

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