Support useing externally defined macros behind #![feature(use_extern_macros)]#37732
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r = me with the style nits addressed
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formatting nit: prefer one arg per line
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☔ The latest upstream changes (presumably #37545) made this pull request unmergeable. Please resolve the merge conflicts. |
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@bors r=nrc |
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📌 Commit 6cb33a0 has been approved by |
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Support `use`ing externally defined macros behind `#![feature(use_extern_macros)]` With `#![feature(use_extern_macros)]`, - A name collision between macros from different upstream crates is much less of an issue since we can `use` the macros in different submodules or rename with `as`. - We can reexport macros with `pub use`, so `#![feature(macro_reexport)]` is no longer needed. - These reexports are allowed in any module, so crates can expose a macro-modular interface. If a macro invocation can resolve to both a `use` import and a `macro_rules!` or `#[macro_use]`, it is an ambiguity error. r? @nrc
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With
#![feature(use_extern_macros)],usethe macros in different submodules or rename withas.pub use, so#![feature(macro_reexport)]is no longer needed.If a macro invocation can resolve to both a
useimport and amacro_rules!or#[macro_use], it is currently an ambiguity error.r? @nrc