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Optimizing a single Rust Clippy lint by 3133X

The author optimized the clippy::nonstandard_macro_braces lint by 3133x through a clever approach that tracks macro expansion chains and uses source text inspection. The key insight was navigating around Clippy's post-expansion execution model by following expansion data upward to recover original brace context. This represents notable low-level Rust compiler tooling work.

Background

Clippy is Rust's official linter that provides style and correctness checks. The nonstandard_macro_braces lint enforces idiomatic brace usage for built-in macros like vec![] instead of vec!().

Source
Lobsters
Published
Sep 13, 2026 at 04:29 AM
Score
7.0 / 10