compile-time regex redux

[Sean Kelly]

Walter Bright wrote:
> 
> But I think we now have good reasons to revisit this, at least for 
> compile time use only. For example:
> 
>     ("aa|b" ~~ "ababb") would evaluate to "ab"
> 
> I expect one would generally only see this kind of thing inside 
> templates, not user code.

Just a quick comment--I want to think about this a bit more.  If we are 
given compile-time regular expressions it may be useful if we could 
obtain more information than this.  For example, I would probably also 
want to know where in the source string the match begins.


Sean