Matthias Krüger cfe1942a3f

Rollup merge of #143245 - tgross35:metavariable-expr-organization, r=petrochenkov ...

mbe: Add tests and restructure metavariable expressions

Add tests that show better diagnostics, and factor `concat` handling to a separate function. Each commit message has further details.

This performs the nonfunctional perparation for further changes such as https://github.com/rust-lang/rust/pull/142950 and https://github.com/rust-lang/rust/pull/142975 .

2025-07-01 04:25:36 +02:00

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empty-input.rs

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empty-input.stderr

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