bors f8e5660532 Auto merge of #118958 - c410-f3r:concat-again, r=petrochenkov ... Add a new concat metavar expr Revival of #111930 Giving it another try now that #117050 was merged. With the new rules, meta-variable expressions must be referenced with a dollar sign (`$`) and this can cause misunderstands with `$concat`. ```rust macro_rules! foo { ( $bar:ident ) => { const ${concat(VAR, bar)}: i32 = 1; }; } // Will produce `VARbar` instead of `VAR_123` foo!(_123); ``` In other words, forgetting the dollar symbol can produce undesired outputs. cc #29599 cc https://github.com/rust-lang/rust/issues/124225		2024-06-14 16:41:39 +00:00
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src	Auto merge of #118958 - c410-f3r:concat-again, r=petrochenkov	2024-06-14 16:41:39 +00:00
Cargo.toml	Clean up rustc_*/Cargo.toml.	2023-10-30 08:46:02 +11:00