Subject: Re: how to get groups out of match-regexp From: Erik Naggum <erik@naggum.net> Date: 2000/08/09 Newsgroups: comp.lang.lisp Message-ID: <3174808983514646@naggum.net> * Charlie Benton <bentonc@mail.utexas.edu> | Let's say I want to extract the first group from the regular expression | "author: \\(\\w+\\);". Documentation told me that if I set the :return | argument to :string then match-regexp would return a list where the | first group would be the 3rd member. Documentation told you that? That's pretty weird. The same documentation tells me that the third _value_ is the first group. At least if we're talking about the match-regexp that comes with in Allegro CL. | But the commmand (print (nth 2 (match-regexp "author: \\(\\w+\\);" "asdf | author: bentonc;" :return :string))) gives me an error. What am I doing | wrong. Try nth-value instead of nth. (I would suggest you drop the print, too, if you're doing this interactively.) #:Erik -- If this is not what you expected, please alter your expectations.