[GSOC idea] enhance regular expressions?

[spir]

On 03/28/2011 11:47 PM, bearophile wrote:
> Dmitry Olshansky:
>
>> http://dsource.org/projects/dmdscript-2. Note that I haven't touched it
>> in couple of dmd releases, it may need cosmetic fixes.
>
> I will try it.
>
>
>> http://swtch.com/~rsc/regexp/regexp1.html, it could be a starting point,
>
> Before fully embracing the contents of that page, look at its critics too.
>
>
>> 3) When I saw Don's comments on fixing CTFE, I remembered something D
>> can do _better_  than most others mainstream compiled languages -
>> metaprogramming. So having a StaticRegex compiled at compile-time
>> (inevitable calambour) would give us an  edge over comparative
>> implementations.
>
> But it inflates the binary too, if overused, because each RE pattern becomes a compiled function (or more than one).
>
>
>> Another thing to sort out is style: are we sticking with ECMA or
>> switching to Perl / GNU? Shall we provide also different versions of
>> syntax?
>
> One RE syntax in a language is more than enough :-) But there are some features of the Python REs that I'd like to see bolted-on to the ECMA REs used by D. So I suggest a superset of ECMA.

... especially the ability to insert free spacing to clarify / comment the 
string pattern (meaning literal whitespace is escaped like '.', etc) (dunno if 
D regex supports that already though).

Denis
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