Allow folding of entire YAML structures i.e. documents (---)

[redactedscribe]

When a file is set to use the YAML language, YAML can be folded. What I find to be missing however is the ability to fold from a document start (---) up to the next start or end (--- / ..., if present).

L1  ---
L2  key1: val
L3  key2: val
L4  ---
L5  keyA: val
L6  keyB: val
L7  ...

I don't have much experience of using pure YAML, but in the above scenario, I'd like to be able to fold lines 1 to 3.

L1  --- …
L4  ---
L5  keyA: val
L6  keyB: val
L7  ...

Hopefully pure YAML users would find this practical. I on the other hand would find this to be particularly useful within Markdown (see FR #180849).

Thanks.

VS Code 1.77.3

[aeschli]

Please file the request against the YAML extension that you use.
By default, for YAML, VS Code creates folding ranges based on indentation

[redactedscribe]

I do not use a YAML extension. I suppose you're saying that VS Code wouldn't not like to extend folding beyond indentations and that an extension should implement folding on --- instead.

[aeschli]

That's correct. Is --- coming from front matter? Then actually a front matter extension should add such folding ranges.

[redactedscribe]

That's correct. Is --- coming from front matter? Then actually a front matter extension should add such folding ranges.

--- can exist in both YAML or Markdown front matter; I was hoping that one underlying feature could address both cases, but for me, folding the --- in Markdown is my wish. I will look into which Markdown extension I have that could possibly implement this.

[aeschli]

Your files are FrontMatter files, from which markdown/yaml is generated. FrontMatter is a preproccessor.
The Markdown and Yaml language extensions should not have to know about FrontMatter syntax.
The folding ranges should come from a FrontMatter extension