rustdoc: Searching for path (including a `::`) does not work

[RalfJung]

Say I want to find the docs for Vec::new, so I search for that. What I get is this: almost all of these results are entirely irrelevant.

rustdoc search should understand enough about Rust syntax to handle :: appropriately.

[hellow554]

IIRC this used to work at some time :/

[CryZe]

Looks like this is a regression in 1.36:
Here it still works: https://doc.rust-lang.org/1.35.0/std/?search=Vec%3A%3Anew
Here it doesn't: https://doc.rust-lang.org/1.36.0/std/?search=Vec%3A%3Anew

[RalfJung]

Well, it works better. It still shows lots of junk even for prior versions.

I mean, when I search for from_raw_parts it also does not show every method that contains the word "from". So searching Vew::new should not show every method called new.

[ayuusweetfish]

Hi!

This regression seems to be introduced in #59622. I have a patch in #64094 and would be grateful if anyone interested helps review it.