[PATCH] D104975: Implement P1949

[Corentin Jabot via Phabricator via cfe-commits]

cor3ntin added a comment.

In D104975#2842425 <https://reviews.llvm.org/D104975#2842425>, @jfb wrote:

> It would be more user-friendly to say which character is not allowed in the diagnostic.

Agreed, done!

> Do we need to have a backward-compatible flag to preserve the old behavior, or do we believe that nobody will be affected by the change? We should make this choice explicitly and state it in the patch description.

I have been wondering about that.
I came to the conclusion it would probably not be worth it. Until fairly recently Unicode identifiers in GCC were not really usable and therefore not used afaik.
I haven't seen people use emojis or other interesting symbols in non-toy code.

I tried to make that clearer in the commit message


Repository:
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  https://reviews.llvm.org/D104975/new/

https://reviews.llvm.org/D104975