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conditionally ignore fatal diagnostic in the SilentEmitter by ytmimi · Pull Requ...
source link: https://github.com/rust-lang/rust/pull/122737
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This change is primarily meant to allow rustfmt to ignore all diagnostics when using the SilentEmitter. Back in #121301 the SilentEmitter was shared between rustc and rustfmt. This changed rustfmt's behavior from ignoring all diagnostic to emitting fatal diagnostics, which lead to rust-lang/rustfmt#6109.
These changes allow rustfmt to maintain its previous behaviour when using the SilentEmitter, while allowing rustc code to still emit fatal diagnostics.
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