This change constructs the search form HTML using JavaScript, instead of plain HTML. It uses a custom element because
- the [parser]'s insert algorithm runs the connected callback synchronously, so we won't get layout jank
- it requires very little HTML, so it's a real win in size
[parser]: https://html.spec.whatwg.org/multipage/parsing.html#create-an-element-for-the-token
This shrinks the standard library by about 60MiB, by my test.
It doesn't look quite right, because the lines are too far apart,
and it's not going to be announced by screenreaders as a menu button,
since that's not what the symbol means.
This adds a real tooltip and uses a better drawing of the icon.
This is a redesign of the feature, with parts pulled from
https://github.com/rust-lang/rust/pull/119049
but with a button that looks more like a button and matches the
one used on other sidebar pages.
Fixes the desktop scrolling weirdness mentioned in
https://github.com/rust-lang/rust/pull/98775#issuecomment-1182575603
As described in the MDN page for this property:
* The current Firefox ESR is 102, and the first Firefox version
to support this feature is 59.
* The current Chrome version 112, and the first version to support
this is 63.
* Edge is described as having a minor bug in `none` mode, but we
use `contain` mode anyway, so it doesn't matter.
* Safari 16, released September 2022, is the last browser to
add this feature, and is also the oldest version we officially
support.
