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Fix long declaration trailing whitespace
Fixes https://github.com/rust-lang/rust/issues/98803.
Interestingly enough, it even simplifies the code a bit.
r? `@notriddle`
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r=GuillaumeGomez
rustdoc: make source sidebar toggle a real button
This fixes tab focus, so that you can open and close the sidebar from keyboard.
This should cause no visible change in appearance at all. The only way you'd know anything different is if you tried to use keyboard controls to open the source code file navigation sidebar.
Separated out from #98772
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r=GuillaumeGomez
rustdoc: use <details> tag for the source code sidebar
This fixes the extremely poor accessibility of the old system, making it possible to navigate the sidebar by keyboard, and also implicitly gives the sidebar items the correct ARIA roles.
Split out separately from #98772
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This fixes tab focus, so that you can open and close the sidebar
from keyboard.
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https://user-images.githubusercontent.com/1593513/176974336-20cecdc3-1885-402a-a6d5-81a8dd03a45d.png
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Use CSS variables to handle theming
This is the start for our simplification of theming. Considering how big the diff quickly becomes, I think it's better to do it in multiple parts.
(The 3 first commits come from https://github.com/rust-lang/rust/pull/98297 so once it's merged, they'll disappear).
Normally they shouldn't be any UI changes. You can check it [here](https://rustdoc.crud.net/imperio/css-simplification/doc/foo/index.html).
cc `@notriddle`
r? `@jsha`
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`<details>`/`<summary>` UI fixes
With images it's easier to understand:


The headings in `<summary>` should not have bottom border so I removed it as well alongside the other fixes.
r? `@jsha`
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On desktop, if you open the source code sidebar, it stays open even when you
move from page to page. It used to do the same thing on mobile, but I think
that's stupid. Since the file list fills the entire screen on mobile, and you
can't really do anything with the currently selected file other than dismiss
the "sidebar" to look at it, it's safe to assume that anybody who clicks a
file in that list probably wants the list to go away so they can see it.
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This fixes the extremely poor accessibility of the old system, making it
possible to navigate the sidebar by keyboard, and also implicitly gives the
sidebar items the correct ARIA roles.
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Remove unneeded methods declaration for old web browsers
All these methods were not defined for IE mostly. But since we don't support it anymore, no need to keep them around.
cc ```@jsha```
r? ```@notriddle```
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Fix source sidebar bugs
This PR fixes the following two bugs:


I added regression tests to prevent them to happen again.
I think we should backport it to beta as well.
You can test it [here](https://rustdoc.crud.net/imperio/source-sidebar-fixes/src/std/lib.rs.html).
cc ```@jsha```
r? ```@notriddle```
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Replace `sort_modules_alphabetically` boolean with enum
This fixes the long-standing FIXME there and makes the code easier to
understand. The reference to modules in both the old and new names seems
potentially wrong since I believe it applies to all items.
r? ``@GuillaumeGomez``
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This fixes the long-standing FIXME there and makes the code easier to
understand. The reference to modules in both the old and new names seems
potentially wrong since I believe it applies to all items.
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rustdoc: fix bugs in main.js popover help and settings
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This commit fixes the keyboard shorts code to call localStorage every time a
key is pressed. This matters because you're supposed to be able to change a
setting and have it immediately take effect.
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rustdoc: reference function signature types from the `p` array
This reduces the size of the function signature index, because it's common to have many functions that operate on the same types.
$ wc -c search-index-old.js search-index-new.js
5224374 search-index-old.js
3932314 search-index-new.js
By my math, this reduces the uncompressed size of the search index by 32%.
On compressed signatures, the wins are less drastic, a mere 8%:
$ wc -c search-index-old.js.gz search-index-new.js.gz
404532 search-index-old.js.gz
371635 search-index-new.js.gz
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Co-authored-by: Guillaume Gomez <guillaume1.gomez@gmail.com>
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Transform help popup into a pocket menu
Just like we moved the settings menu into a "pocket menu", it's doing the same to the help popup.
You can test it [here](https://rustdoc.crud.net/imperio/help-pocket-menu/doc/foo/index.html) and here is a screenshot:

r? ``````````@jsha``````````
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This reduces the size of the function signature index, because
it's common to have many functions that operate on the same types.
$ wc -c search-index-old.js search-index-new.js
5224374 search-index-old.js
3932314 search-index-new.js
By my math, this reduces the uncompressed size of the search index by 32%.
On compressed signatures, the wins are less drastic, a mere 8%:
$ wc -c search-index-old.js.gz search-index-new.js.gz
404532 search-index-old.js.gz
371635 search-index-new.js.gz
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Add macro support in jump to definition feature
Fixes #91174.
To do so, I check if the span comes from an expansion, and if so, I infer the original macro `DefId` or `Span` depending if it's a defined in the current crate or not.
There is one limitation due to macro expansion though:
```rust
macro_rules! yolo { () => {}}
fn foo() {
yolo!();
}
```
In `foo`, `yolo!` won't be linked because after expansion, it is replaced by nothing (which seems logical). So I can't get an item from the `Visitor` from which I could tell if its `Span` comes from an expansion.
I added a test for this specific limitation alongside others.
Demo: https://rustdoc.crud.net/imperio/macro-jump-to-def/src/foo/check-source-code-urls-to-def-std.rs.html
As for the empty macro issue that cannot create a jump to definition, you can see it [here](https://rustdoc.crud.net/imperio/macro-jump-to-def/src/foo/check-source-code-urls-to-def-std.rs.html#35).
r? ```@jyn514```
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rustdoc: optimize loading of source sidebar
The source sidebar has a setting to remember whether it should be open or
closed. Previously, this setting was handled in source-script.js, which
is loaded with `defer`, meaning it is often run after the document is rendered.
Since CSS renders the source sidebar as closed by default, changing this
after the initial render results in a relayout.
Instead, handle the setting in storage.js, which is the first script to load
and is the only script that blocks render. This avoids a relayout and means
navigating between files with the sidebar open is faster.
Demo: https://rustdoc.crud.net/jsha/defer-source-sidebar/src/alloc/ffi/c_str.rs.html
r? ````@GuillaumeGomez````
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This assert is just making sure the size of `Context` doens't grow
unexpectedly, and it's already not being checked on every platform.
`PathBuf` now has a different size on Windows, so adjust this to
avoid checking the size on Windows.
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The source sidebar has a setting to remember whether it should be open or
closed. Previously, this setting was handled in source-script.js, which
is loaded with `defer`, meaning it is often run after the document is rendered.
Since CSS renders the source sidebar as closed by default, changing this
after the initial render results in a relayout.
Instead, handle the setting in storage.js, which is the first script to load
and is the only script that blocks render. This avoids a relayout and means
navigating between files with the sidebar open is faster.
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querying it
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Now that the "All Crates" dropdown is only rendered on the search results page,
there is no need to load crates.js on most pages. Load it only on crate pages.
Also, add the `defer` attribute so it does not block page rendering.
For sidebar-items.js, move the script tag to `<head>`. Since it already has the
defer attribute it won't block loading. The defer attribute does preserve
ordering between scripts, so instead of the callback on load, it can set a
global variable on load, which is slightly simpler. Also, since it is required
to finish rendering the page, beginning its load earlier is better.
Remove generation and handling of sidebar-vars. Everything there can be computed
with information available in JS via other means.
Remove the "other" wrapper in the sidebar. It was unnecessary.
Remove excess script fields
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rustdoc: remove tuple link on round braces
This is #98069 but for tuples. The reasoning is the same:
* This PR also changes it so that tuples with all-generic elements still link to the primitive.tuple.html page, just like slices. So there still plenty of on-ramps for anybody who doesn't know about it.
* It's too hard to see when round braces are a separate link from the type inside of them.
* It's too hard to click even if you do notice them.
Before:
* impl [ToSocketAddrs](https://doc.rust-lang.org/nightly/std/net/trait.ToSocketAddrs.html) for [(](https://doc.rust-lang.org/nightly/std/primitive.tuple.html)[IpAddr](https://doc.rust-lang.org/nightly/std/net/enum.IpAddr.html), [u16](https://doc.rust-lang.org/nightly/std/primitive.u16.html)[)](https://doc.rust-lang.org/nightly/std/primitive.tuple.html)
* impl<K, V> [FromIterator](https://notriddle.com/notriddle-rustdoc-test/std/iter/trait.FromIterator.html)<[(](https://notriddle.com/notriddle-rustdoc-test/std/primitive.tuple.html)K, V[)](https://notriddle.com/notriddle-rustdoc-test/std/primitive.tuple.html)> for [BTreeMap](https://notriddle.com/notriddle-rustdoc-test/std/collections/struct.BTreeMap.html)<K, V>
After:
* impl [ToSocketAddrs](https://doc.rust-lang.org/nightly/std/net/trait.ToSocketAddrs.html) for ([IpAddr](https://doc.rust-lang.org/nightly/std/net/enum.IpAddr.html), [u16](https://doc.rust-lang.org/nightly/std/primitive.u16.html))
* impl<K, V> [FromIterator](https://notriddle.com/notriddle-rustdoc-test/std/iter/trait.FromIterator.html)<[(K, V)](https://notriddle.com/notriddle-rustdoc-test/std/primitive.tuple.html)> for [BTreeMap](https://notriddle.com/notriddle-rustdoc-test/std/collections/struct.BTreeMap.html)<K, V>
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