proposal: heredoc comments to allow `+/` in comments, eg from urls or documented unittests

[Kagamin]

On Saturday, 10 February 2018 at 07:57:12 UTC, Vladimir Panteleev 
wrote:
> On Friday, 9 February 2018 at 03:06:56 UTC, Timothee Cour wrote:
>> and weird urls like 
>> https://gcc.gnu.org/onlinedocs/libstdc++/faq.html
>
> Workaround: percent-encoding.
>
> https://gcc.gnu.org/onlinedocs/libstdc%2B%2B/faq.html works too.

A real life example: 
http://clang.llvm.org/docs/UsersManual.html#mingw-w64
Well, it's just C++ causing trouble to everyone again.