Documentation: remember the selected crate in search

[pravic]

Right now it is allowed to select whether we want to search within all crates or in the specific ones (e.g. core, std, etc).

It would be really useful to remember the selected option, because in most cases we want to search in the std crate only.

cc @GuillaumeGomez

[GuillaumeGomez]

Good idea!

[pravic]

Does not work, neither in stable nor nightly.

• Go to https://doc.rust-lang.org/nightly/std/index.html
• Choose the "std" option.
• Type Option, click on it
• We still see the "All crates" on the result page, and if we try to search something else, results will be from all sources anyway.

@GuillaumeGomez

[GuillaumeGomez]

Indeed, will take a look quickly.

[pravic]

Works perfectly now. Thanks!