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rustdoc: long type aliases overflow grey box at top of screen #89972

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jsha opened this issue Oct 17, 2021 · 1 comment · Fixed by #90018
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rustdoc: long type aliases overflow grey box at top of screen #89972

jsha opened this issue Oct 17, 2021 · 1 comment · Fixed by #90018
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@GuillaumeGomez
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A-rustdoc-ui Area: rustdoc UI (generated HTML) T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue.

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@jsha
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jsha commented Oct 17, 2021

Given a program like:

pub type ReallyLongTypeNameLongLongLong = Option<unsafe extern "C" fn(a: *const u8, b: *const u8) -> *const u8>;

fn main() {
    println!("Hello, world!");
}

The type's summary in the grey box at the top of the page overflows:

image

Example at:

https://jacob.hoffman-andrews.com/rust/longname/longname/type.ReallyLongTypeNameLongLongLong.html

Note that this does not happen for structs. I haven't tested for other item kinds.
@jsha jsha added the A-rustdoc-ui Area: rustdoc UI (generated HTML) label Oct 17, 2021
@GuillaumeGomez GuillaumeGomez added the T-rustdoc Relevant to the rustdoc team, which will review and decide on the PR/issue. label Oct 18, 2021
@GuillaumeGomez
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Will send a fix shortly.

@GuillaumeGomez GuillaumeGomez self-assigned this Oct 18, 2021
@GuillaumeGomez GuillaumeGomez mentioned this issue Oct 18, 2021
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GuillaumeGomez added a commit to GuillaumeGomez/rust that referenced this issue Oct 19, 2021
@GuillaumeGomez
Rollup merge of rust-lang#90018 - GuillaumeGomez:too-long-item-names,…
048d3a9 
… r=jsha

Fix rustdoc UI for very long type names

Fixes rust-lang#89972.

While working on it, I also discovered that when the item name is too long, it also breaks the flow of the page.

To make things right, I also renamed the `type-decl` CSS class into `item-decl` (because this PR also generates it for more than type declarations).

So here are the before/after screenshots:

![Screenshot from 2021-10-18 16-58-03](https://user-images.githubusercontent.com/3050060/137757247-637fcf04-4406-49c6-8a8a-18c2074aacd9.png)
![Screenshot from 2021-10-18 16-58-26](https://user-images.githubusercontent.com/3050060/137757252-17935e63-53b3-449f-a535-7be91ff0e257.png)

![Screenshot from 2021-10-18 16-58-07](https://user-images.githubusercontent.com/3050060/137757278-8b12e348-2980-4fc4-8853-bef99d58981f.png)
![Screenshot from 2021-10-18 16-58-28](https://user-images.githubusercontent.com/3050060/137757282-534a0e1b-3016-49ba-b3ac-e45bdb9035cb.png)

r? `@jsha`
@bors bors closed this as completed in 7ceab9e Oct 20, 2021
@jsha jsha mentioned this issue Dec 29, 2021
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Fix rustdoc UI for very long type names GuillaumeGomez/rust
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@jsha @GuillaumeGomez