irregex
                           -------

           Portable Efficient IrRegular Expressions

             http://synthcode.com/scheme/irregex/

A fully portable and efficient R[4567]RS implementation of regular expressions, supporting both POSIX syntax with various (irregular) PCRE extensions, as well as SCSH's SRE syntax. DFA matching is used when possible, otherwise a closure-compiled NFA approach is used.

Documentation is in the file irregex.html.