Capture offset of matches in std.regex.matchAll?

[JR via Digitalmars-d-learn]

On Monday, 7 July 2014 at 21:32:30 UTC, JD wrote:
> I'm using a compile time regex to find some tags in an input
> string. Is it possible to capture the offset of the matches in
> some way? Otherwise I have to "calculate" the offsets myself by
> iterating over the results of matchAll.
>
> Thanks,
> Jeroen

I believe what matchAll returns evaluates its .front lazily, so 
aye; you need to pop it until you get to the match you want. :< 
(assuming I understand the question correctly)

You can however index the *captured fields* in a specific match. 
I couldn't wrap my head around your example pattern but see 
http://dpaste.dzfl.pl/f693db93c3a4 for a dumbed-down version.

You can't slice match, nor can you have foreach provide an index 
variable. This may be to have foreach include named fields? Not 
sure.