primitives (and their methods) don't show up in rustdoc search results

[TimNN]

I needed a method to replace some text in a string. Searching rustdoc for "replace" did not yield any result. After 5 minutes of looking around I finally found it after using the "[src]" link of the std::str docs and employing Ctrl+F to search the source. Only when I noticed that the method was defined on the primitive str type, did I remember that primitives are documented separately.

I already have experience in navigating rustdoc, but it still took me a considerable amount of time to find what I was looking for. The topic of hard to find documentation on strings was already the subject #22902, which resulted in two tiny links being added to the docs of std::str.

I think at the very least std::str should prominently link to the str primitive, mentioning specifically that additional methods are documented there.

Even better in my opinion would be if primitives and their methods could be found using rustdoc's search, maybe under a pseudo module (ie. primitive::str::replace).

[steveklabnik]

We have four or five related issues ipen about primitives, and also one about Deref coercions. (That's more of a 👍 than a 'this is invalid', it's certainly a pain point)

[TimNN]

Now I feel stupid, while searching for open issues I filtered using the A-docs label instead of A-rustdoc...

Closing as dupe of #23511.

[steveklabnik]

That was a 👍 emoji, yay mobile!

Anyway, cool, wasn't sure if there was something additional here. I really like the intermediate solution of linking to the primitive page from the module page.

I filtered using the A-docs label instead of A-rustdoc...

It's all good. generally, A-docs is docs that need to be written, which is what this looks like at first. :)