And, now that we do that, we can remove the explanatory note since the
error span should make it clear what the disambiguator is.

Fix rust-lang#83550 regression

escape_ascii take 2

The previous PR, rust-lang#73111 was closed for inactivity; since I've had trouble in the past reopening closed PRs, I'm just making a new one.

I'm still running the tests locally but figured I'd open the PR in the meantime. Will fix whatever errors show up so we don't have to wait again for this.

r? `@m-ou-se`

… r=jyn514

Lint on unknown intra-doc link disambiguators

…egg-test, r=lcnr

Add a regression test for issue-82792

Closes rust-lang#82792

r? `@lcnr`

…span, r=RalfJung

Remove a FIXME resolved by rust-lang#73578

r? `@RalfJung`

…=jonas-schievink

⬆️ rust-analyzer

Wrap non-pre code blocks

Fix rust-lang#83550 regression

```
$ cargo new --lib whitespace && cd whitespace && echo '//! `"   foo   "`' > src/lib.rs && cargo doc --open
```

Before

![](https://user-images.githubusercontent.com/89623/112713498-c0dfc200-8ed5-11eb-8c57-efdf26372e74.png)

After

![](https://user-images.githubusercontent.com/89623/112713538-f08eca00-8ed5-11eb-8a98-675179f60ae2.png)

r? `@GuillaumeGomez`
cc `@mgeisler`