Commits on May 3, 2021

1. Unify rustc and rustdoc parsing of cfg() …

   This extracts a new `parse_cfg` function that's used between both.
   
   - Treat `#[doc(cfg(x), cfg(y))]` the same as `#[doc(cfg(x)]
     #[doc(cfg(y))]`. Previously it would be completely ignored.
   - Treat `#[doc(inline, cfg(x))]` the same as `#[doc(inline)]
     #[doc(cfg(x))]`. Previously, the cfg would be ignored.
   - Pass the cfg predicate through to rustc_expand to be validated
   
   Co-authored-by: Vadim Petrochenkov <vadim.petrochenkov@gmail.com>

   

   jyn514 and petrochenkov committed May 3, 2021
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