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5d95ec05f6
formatting_options: Make all methods `const` Related to rust-lang/rust#118117. Having `const fn`s that take a `mut &` was unstable until Rust 1.83 (see rust-lang/rust#129195). Because of this, not all methods on `FormattingOptions` were implemented as `const`. As this has been stabilized now, there is no reason not to have all methods `const`. Thanks to `@Ternvein` for bringing this to my attention (see [1]). r? `@m-ou-se` (As you were the reviewer for the original implementation – feel free to reroll if you are busy or if you aren't interested) [1]: https://github.com/rust-lang/rust/issues/118117#issuecomment-2687470635