Question Clang(d): Is there a way to activate __cpp_consteval as experimental flag?

[Febbe]

When using clangd in combination with an msvc compiler and its STL - impl, it is not possible to use some features which require __cpp_consteval, even it is already (partially) supported.

Therefore I would like to have the ability to activate some experimental features like __cpp_consteval.
If this is not possible, it might be usefull to add such an option to increase feedback for new features from some bleeding edge devs like me.

[royjacobson]

I don't recommend actually doing it, but it's possible to just add -D__cpp_consteval=201811 to the command line of clang/d until it is mature enough.