Folding support for headers in preview window

[fabiante]

Current behavior

Currently Boostnote is not able to fold title sections like word does.

Expected behavior

I'd like to be able to fold "chaperts" like in word:

[farzadmf]

I used to do manual HTML markup in my markdown, and it was working before, but I think it's broken in newer versions :(

As an example:

<details><summary>19: Variables</summary>
### 19: Variables

- ...
- ...

</details>

With the latest version (which I think would be: 0.11.8(2018/7/19)), I see something like this:

But clicking the arrow on the left doesn't do anything (as you may have guessed by noticing that the header (created by ###) is actually not inside the region but outside

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[hikerpig]

AFAIK, Boostnote supports header folding (tested in v0.12.1), in editor mode of course.

Is this what you suggest @fabiante ?

What @farzadmf mentioned is a markdown parser problem, similar to this issue HTML Table does not render if there's blank line inside markup

[fabiante]

Kind of. But I'd also like to be able to fold the rendered markdown headers (right side)

[shriram-svg]

Opened PR #3796 for rendered markdown header folding: #3796