Heuristics for omitting parameter inlay hints are not documented nor are they configurable #17433
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Lunaphied
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These are not currently documented and could cause users to think that their rust-analyzer configuration is broken. Partially addresses rust-lang#17433.
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…kril docs: document omission heuristics for parameter inlay hints These are not currently documented and could cause users to think that their rust-analyzer configuration is broken. Partially addresses #17433.
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Right now, a parameter inlay hint is automatically omitted using a series of heuristics defined here. This isn't referenced in the documentation at all, and while useful, also cannot be tweaked or disabled.
As a result it can appear that inlay hints for parameters are broken, since quite frequently these heuristics will match and they will be omitted.
I think an appropriate resolution would be to both document the heuristics being used (something I'm planning to PR in a moment), and to allow disabling these heuristics. Ideally each heuristic could be individually disabled and/or configured but a global disable for the heuristic omission would also be ideal.
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