[rustdoc] Docs search gives overly narrow results

[Lokathor]

When searching through a crate using generated docs, the search doesn't show the correct results. Specifically, if you go to a page such as this one we can see that there are many many functions with mul_ as part of their name. And yet, when you change mul to mul_ in the search box, the results are filtered to only 6 results.

On top of that, four of the six results don't even actually contain the string mul_ in their name.

[jyn514]

At first I thought this was related to #75347, but https://docs.rs/safe_arch/0.5.1/safe_arch/?search=mul was published earlier and also reproduces the issue.

This needs a bisection, ideas for doing so in the dropdown for #74780.

[siddharthzs]

I would like to take this up.

[jyn514]

@siddharthzs this is not trivial to fix ... but if you want to help it would be great to find out when the error first started happening (or if it's always been a bug). There's instructions for bisecting search regressions in #74780.

[notriddle]

I built the docs for safe_arch 0.5.2 with a current nightly and cannot reproduce it. I can reproduce it with the docs.rs link, demonstrating the thing that changed is search.js, and not, for example, my browser.

http://notriddle.com/rustdoc-html-demo-8/safe_arch/safe_arch/index.html?search=mul

http://notriddle.com/rustdoc-html-demo-8/safe_arch/safe_arch/index.html?search=mul_

I'm closing this, since it's almost certainly fixed (a lot of search code has been rewritten in the last three years).