I'm going to do some lisp, this is exciting: By Googling, as well emacs lisp, I just now found a regex engine for common lisp: CL-PPCRE - Portable Perl-compat

I'm going to do some lisp, this is exciting: By Googling, as well emacs lisp, I just now found a regex engine for common lisp: CL-PPCRE - Portable Perl-compatible regular expressions for Common Lisp Abstract CL-PPCRE is a portable regular expression library for Common Lisp which has the following features: It is compatible with Perl. It is pretty fast. It is portable between ANSI-compliant Common Lisp implementations. It is thread-safe. In addition to specifying regular expressions as strings like in Perl you can also use S-expressions. It comes with a BSD-style license so you can basically do with it whatever you want. CL-PPCRE has been used successfully in various applications like BioBike, clutu, LoGS, CafeSpot, Eboy, or The Regex Coach. http://weitz.de/cl-ppcre http://weitz.de/cl-ppcre