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rust/library
Matthias Krüger d667105681 Rollup merge of #106946 - dtolnay:hashlinecolumn, r=m-ou-se
implement Hash for proc_macro::LineColumn

For use in `HashMap<LineColumn, TokenTree>` or `HashMap<LineColumn, Comment>`, for example.

[Here is an example of one case complicated by the absence of this impl.](https://github.com/andrewbaxter/genemichaels/blob/71bc45e417c3f9dae09f890f1ec4630e758e5c70/src/comments.rs#L25-L34)

Tracking issue: https://github.com/rust-lang/rust/issues/54725
2023-01-26 07:53:24 +01:00
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