Multiline string literal improvements

[Dmitry Olshansky]

On Thursday, 12 October 2017 at 16:59:46 UTC, Meta wrote:
> On Thursday, 12 October 2017 at 08:08:17 UTC, Igor wrote:
>> I tried this but Disassembly view shows:
>>
[snip]
>
> Hmm, you're right. I could've sworn that std.regex is 
> CTFE-friendly but it looks like I was wrong. If it used the GC 
> instead of malloc this would probably work.

Indeed it’s been an ongoing work to make regex match at CTFE. I 
considered peperring the code paths with __ctfe ? malloc ... : 
new[]
But it a lot of corner cases snd run-time optimized code path is 
already quite impenetrable.