wow, that was really fast. thanks! <div class="gmail_quote">On Sat, Nov 26, 2011 at 09:37, Robby Findler <<a href="mailto:robby@eecs.northwestern.edu">robby@eecs.northwestern.edu</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">This has been changed in the current pre-release version, available from git and via a nightly build: <a href="http://pre.racket-lang.org/installers/" target="_blank">http://pre.racket-lang.org/installers/</a> Robby <div><div class="h5"> On Fri, Nov 25, 2011 at 3:22 PM, ozzloy <<a href="mailto:ozzloy@gmail.com">ozzloy@gmail.com</a>> wrote: > i was writing a unit test which had something analogous to the following: > (check-equal? #rx"a" #rx"a") => raises exn:test:check > so i checked and sure enough: > (equal? #rx"a" #rx"a) => #f > which led me to look for a regexp-equal? so i could do (check regexp-equal? > #rx"a" #rx"a") > that doesn't exist, so i wrote one: > (define (regexp-equal? a b) > (and (and (regexp? a) > (regexp? b)) > (or (and (pregexp? a) > (pregexp? b)) > (and (not (pregexp? a)) > (not (pregexp? b)))) > (equal? (object-name a) > (object-name b)))) > why not just have (equal? #rx"a" #rx"a") => #t ? > anticipated objection: "what should equal? mean for two regexps?" > it should mean that the patterns are identical, totally ignoring that two > non-identical patterns might match exactly the same set, like #rx"(a|b)" and > #rx"(b|a)". > i see in the docs that there is an internal regexp value. if those are what > i think they are, i propose equal? just compares those for regexes. > </div></div>> _________________________________________________ > For list-related administrative tasks: > <a href="http://lists.racket-lang.org/listinfo/users" target="_blank">http://lists.racket-lang.org/listinfo/users</a> > </blockquote></div>