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León Orell Valerian Liehr
28c0fa87bb
rustdoc: fix and refactor HTML rendering a bit
* refactoring: get rid of a bunch of manual `f.alternate()` branches
* not sure why this wasn't done so already, is this perf-sensitive?
* fix an ICE in debug builds of rustdoc
* rustdoc used to crash on empty outlives-bounds: `where 'a:`
* properly escape const generic defaults
* actually print empty trait and outlives-bounds (doesn't work for cross-crate reexports yet, will fix that at some other point) since they can have semantic significance
* outlives-bounds: forces lifetime params to be early-bound instead of late-bound which is technically speaking part of the public API
* trait-bounds: can affect the well-formedness, consider
* makeshift “const-evaluatable” bounds under `generic_const_exprs`
* bounds to force wf-checking in light of #100041 (quite artificial I know, I couldn't figure out something better), see https://github.com/rust-lang/rust/pull/121160#discussion_r1491563816