Rendering of nested oneOf selectors

[cmeeren]

It's great that ReDoc supports nested oneOf, but the rendering can be improved.

Example definition:

ErrorA:
  properties:
    ...

ErrorB:
  properties:
    ...

ErrorC:
  properties:
    ...

ErrorAB:
  oneOf:
    - $ref: '#/components/schemas/ErrorA'
    - $ref: '#/components/schemas/ErrorB'

ErrorABC:
  oneOf:
    - $ref: '#/components/schemas/ErrorAB'
    - $ref: '#/components/schemas/ErrorC'

Currently it renders like this:

I suggest at least spacing them out a bit vertically (simple fix - only CSS?).

You could also consider connecting them with lines (probably a bit more work?), like below, but that requires some design of what happens when the list of selectors becomes long enough to break onto a second line.

Lines like these will of course only make sense for directly nested oneOf.

[RomanHotsiy]

Nice suggestion!

PRs are welcome!

[cmeeren]

Unfortunately I'm no front-end/JS dev, so someone else will have to help out here.

[cmeeren]

In any case: If you could just increase the margin a bit, that would go a long way to making this look good. :)