macros: clean up scopes of expanded #[macro_use]
imports
#37084
Merged
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This PR changes the scope of macro-expanded
#[macro_use]
imports to match that of unexpanded#[macro_use]
imports. For example, this would be allowed:This PR also enforces the full shadowing restrictions from RFC 1560 on
#[macro_use]
imports (currently, we only enforce the weakened restrictions from #36767).This is a [breaking-change], but I believe it is highly unlikely to cause breakage in practice.
r? @nrc