in which unused-parens suggestions heed what the user actually wrote #55138
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Aaron Hill pointed out that unnecessary parens around a macro call (paradigmatically, `format!`) yielded a suggestion of hideous macro-expanded code. (The slightly unusual choice of using the pretty-printer to compose suggestions was quite recently commented on in the commit message for 1081bbb ("abolish ICE when pretty-printing async block"), but without any grounds to condemn it as a 𝘣𝘢𝘥 choice. Hill's report provides the grounds.) `span_to_snippet` is fallable as far as the type system is concerned (because, who knows, macros or something), so the pretty-printing can live on in the oft-neglected `else` branch. Resolves rust-lang#55109.
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kennytm
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in which unused-parens suggestions heed what the user actually wrote Aaron Hill pointed out that unnecessary parens around a macro call (paradigmatically, `format!`) yielded a suggestion of hideous macro-expanded code. `span_to_snippet` is fallable as far as the type system is concerned, so the pretty-printing can live on in the oft-neglected `else` branch. Resolves rust-lang#55109.
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in which unused-parens suggestions heed what the user actually wrote Aaron Hill pointed out that unnecessary parens around a macro call (paradigmatically, `format!`) yielded a suggestion of hideous macro-expanded code. `span_to_snippet` is fallable as far as the type system is concerned, so the pretty-printing can live on in the oft-neglected `else` branch. Resolves rust-lang#55109.
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Rollup of 22 pull requests Successful merges: - #53507 (Add doc for impl From for Waker) - #53931 (Gradually expanding libstd's keyword documentation) - #54965 (update tcp stream documentation) - #54977 (Accept `Option<Box<$t:ty>>` in macro argument) - #55138 (in which unused-parens suggestions heed what the user actually wrote) - #55173 (Suggest appropriate syntax on missing lifetime specifier in return type) - #55200 (Documents `From` implementations for `Stdio`) - #55245 (submodules: update clippy from 5afdf8b to b1d0343) - #55247 (Clarified code example in char primitive doc) - #55251 (Fix a typo in the documentation of RangeInclusive) - #55253 (only issue "variant of the expected type" suggestion for enums) - #55254 (Correct trailing ellipsis in name_from_pat) - #55269 (fix typos in various places) - #55282 (Remove redundant clone) - #55285 (Do some copy editing on the release notes) - #55291 (Update stdsimd submodule) - #55296 (Set RUST_BACKTRACE=0 for rustdoc-ui/failed-doctest-output.rs) - #55306 (Regression test for #54478.) - #55328 (Fix doc for new copysign functions) - #55340 (Operands no longer appear in places) - #55345 (Remove is_null) - #55348 (Update RELEASES.md after destabilization of non_modrs_mods) Failed merges: r? @ghost
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Aaron Hill pointed out that unnecessary parens around a macro call (paradigmatically,
format!) yielded a suggestion of hideous macro-expanded code.span_to_snippetis fallable as far as the type system is concerned, so the pretty-printing can live on in the oft-neglectedelsebranch.Resolves #55109.