rust/compiler/rustc_interface
bors 7585c62658 Auto merge of #119473 - Urgau:check-cfg-explicit-none, r=petrochenkov
Add explicit `none()` value variant in check-cfg

This PR adds an explicit none value variant in check-cfg values: `values(none())`.

Currently the only way to define the none variant is with an empty `values()` which means that if someone has a cfg that takes none and strings they need to use two invocations: `--check-cfg=cfg(foo) --check-cfg=cfg(foo, values("bar"))`.
Which would now be `--check-cfg=cfg(foo, values(none(),"bar"))`, this is simpler and easier to understand.

`--check-cfg=cfg(foo)`, `--check-cfg=cfg(foo, values())` and `--check-cfg=cfg(foo, values(none()))` would be equivalent.

*Another motivation for doing this is to make empty `values()` actually means no-values, but this is orthogonal to this PR and adding `none()` is sufficient in it-self.*

`@rustbot` label +F-check-cfg
r? `@petrochenkov`
2024-01-13 06:17:46 +00:00
..
src Auto merge of #119473 - Urgau:check-cfg-explicit-none, r=petrochenkov 2024-01-13 06:17:46 +00:00
Cargo.toml Call FileEncoder::finish in rmeta encoding 2023-11-22 22:49:22 -05:00
messages.ftl Write to stdout if - is given as output file 2023-06-06 17:53:29 -04:00