rustdoc: "Type -> *" search does not work.

[RalfJung]

The rustdoc help says:

Search functions by type signature (e.g., vec -> usize or * -> vec)

Based on this example, I expected the natural generalization vec -> * to also work and show all functions that take a vec as input, but that query shows no result at all. I am not sure if there is any way to show "all functions that take T as input", which is surprising given that the same is possible for the return type.

[RalfJung]

Cc @rust-lang/rustdoc

[bjorn3]

[RalfJung]

Ah, I somehow never even noticed these tabs. Thanks!

Seems strange though that of the two tabs on the right, one has a short-hand via the search box ("in return types"), but the other does not.

[GuillaumeGomez]

Once #90630 is merged, I'll take a look to this one.

[Emilgardis]

any progress on this? * -> vec doesn't work anymore either and is not suggested by rustdoc in the help text

edit: found #100079, the new syntax for "returns vec" is -> vec

[GuillaumeGomez]

* isn't supported in the search syntax currently so neither * -> vec or vec -> * is working.

[lolbinarycat]

triage: this has been fixed, and has several test cases.