rust-lang / rust-lang/mdBook

Collapsible Admonitions

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C-enhancement
Dominant language
Rust
Stars
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Forks
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PR merge metrics
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Description

Problem

Would be nice to have collapsible admonitions :) Personally I like to hide technical details in them, so the page is cleaner overall.

I am aware of mdbook-admonish and using it, but since it is not compatible with mdbook 0.5
I would like to use the integrated features instead.

Proposed Solution

Use - to mark an admonition as collapsible, like:

> [!NOTE]-
> General information or additional context.
Notes

With that, custom headers (#2975) and the possibility to add custum admonitions with css like in mdbook-admonish would make it feature complete for me.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing mdBook's existing admonition handling and the proposed syntax in this issue, then compare the custom-header work in #2975 and the mdbook-admonish custom-block behavior. Done means the > admonition form with a trailing - renders as collapsible while preserving the requested header and CSS customization considerations.

Written by the indexing model from the issue text.

Assessment

Tech stack
css, markdown, rust
Domain
documentation
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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