From: Simon Strandgaard <qj5nd7l02@...>
Date: 2003-10-09T07:10:42+09:00
Subject: Re: Extension Language for a Text Editor

On Wed, 08 Oct 2003 22:39:13 +0000, gabriele renzi wrote:

> Anyway, why would you do such a thing ? the regex language is quite
> standardized now, why would you change it?

I am in the process of writing my own regex engine (for AEditor).
The reason why I cannot use Ruby's are, that I must run regex's on 
a wide range of iterators. 

I want to use same syntax as Ruby's regex, and perhaps extend it
with some editor stuff, perhaps like:
* how to traverse the datastructure, jump over folds, jump into folds.
* regex on columnar selections.
* mechanism for getting the syntax-state: perhaps a regex which 
  only operates inside comments,  apply regex to variable-names, etc.

Status for my regex project:
DONE  studies of how Rubys GNU-regex engine behave.
DONE  nfa 2 dfa.
DONE  regex-datastructure 2 nfa.
TODO  translate regex-string into regex-datastructure

There is probably some item which I have overseen.

You can check it out here:
http://rubyforge.org/cgi-bin/cvsweb.cgi/projects/experimental/nfa_to_dfa/?cvsroot=aeditor

--
Simon Strandgaard