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3 changes: 2 additions & 1 deletion compiler/rustc_span/src/symbol.rs
Original file line number Diff line number Diff line change
Expand Up @@ -1710,7 +1710,8 @@ impl fmt::Display for Ident {
}
}

/// This is the most general way to print identifiers.
/// The most general type to print identifiers.
///
/// AST pretty-printer is used as a fallback for turning AST structures into token streams for
/// proc macros. Additionally, proc macros may stringify their input and expect it survive the
/// stringification (especially true for proc macro derives written between Rust 1.15 and 1.30).
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