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Claim to follow Unicode 16 for lexing identifiers. #557

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mattheww
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@mattheww mattheww commented May 6, 2025

Rustc has used Unicode 16 since Rust 1.83.

This change brings the FLS into sync with the Reference for this detail.
See rust-lang/reference#1688.

I'm not sure whether the changelog should be updated (and if so, how). The FLS was previously claiming Unicode version 13. I don't have notes saying which versions the updates to Unicode 14 and 15 happened in.

Unicode normalization is also dependent on the Unicode version, but there's no version number in the existing text of §2.3:16 (fls_vde7gev5rz4q).

This change happened in Rust 1.83.
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cc @Veykril

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Veykril commented May 12, 2025

The changelog (as used so far) generally only tracks the language level changes from the RELEASES.md, so if that was not listed there it doesn't need to touch the changelog I believe.

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