[racket] s-expression syntax for regular expressions

A while ago I found a link in a post in the Racket user forum to an article
where a CS prof was describing a suggested a new syntax for regular
expressions based on s-expressions.  But I haven't been able to locate it
in the forum again.

If anyone knows the link I'm talking about could they post it please.

Thanks,
Harry
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.racket-lang.org/users/archive/attachments/20131229/cf70dda3/attachment.html>