I have just posted version v0.2.1 of 'defpatt' - a mechanism for defining and using regular expression abstractions with CL-PPCRE. The update fixes a bothersome error affilicting certain types of defpatt expressions. I strongly recommend anyone looking at or using defpatt.
'defpatt' can be downloaded from http://www.harbo.net/downloads.
best regards,
-Klaus.
cl-ppcre-devel@common-lisp.net