Add a Markdown Table of Contents (TOC) sidebar view

[WYK15]

Body

What are you proposing?

I am proposing a built-in Markdown Outline / Table of Contents (TOC) view that can be displayed in the sidebar (like the file tree or symbol outline), similar to how Typora or VS Code handles Markdown navigation.

Why does this matter?

When working with long Markdown files (like documentation, research notes, or READMEs), it is very difficult to navigate through different sections without a visual outline. Having a persistent TOC in the sidebar would make browsing and jumping between headings much faster and improve the overall writing/reading experience in Zed.

Are there any examples or context?

• Typora: Has an "Outline" tab in the sidebar that lists all headings (#, ##, etc.) and lets you click to jump.

Possible approach

• Add a dedicated "Outline" or "TOC" tab/panel in the sidebar.
• Automatically parse the active Markdown file's headings and display them as a hierarchical tree.
• Clicking on a heading in the tree should instantly scroll the editor to that section.

[strangemonad]

@WYK15 doesn't this already mostly work as intended with the symbol menu and pane, which get their content from tree-sitter?

[WYK15]

@strangemonad thanks, this is what I want, howeve, Although this achieves the TOC effect, the markdown preview doesn't auto-scroll when clicking headings in the outline.

[SomeoneToIgnore]

Amazing, seems like we can close this particularly formulated feature request then.