Regular expression support in D2

[Don]

Justin Johansson wrote:
> Just having a poke under the D2/Phobos hood with a view to playing with D2 in anger (though I'm wary of jumping from D1 just right now).
> 
> There are 2 modules: regex.d and regexp.d
> 
> Which does one use for regular expression support in D2 and why?  Is one legacy with respect to the other?
> 
> Thanks
> 
> -- Justin Johansson
> 
Use std.regex. regexp is scheduled for deprecation.