Mixed ordered and unordered list hierarchies should indent consistently

[srichy]

Summary

Mixed nested ordered and unordered lists causes indentation prefixes to get dropped in some cases.

Details

Input like this (but starting in the first column; using CODE blocks here):

- This is a top-level bulleted list - This is second-level bulleted list - Second of the second 1. This is ordered and second-order nested 1. Second entry of same

should render like:

* This is a top-level bulleted list * This is second-level bulleted list * Second of the second 1. This is ordered and second-order nested 2. Second entry of same

given formatting options unorderedListMarker: .star, orderedListNumerals:.incrementing(start: 1), and emphasisMarker: .underline.

However, before this change, they render like:

* This is a top-level bulleted list * This is second-level bulleted list * Second of the second 1. This is ordered and second-order nested 2. Second entry of same

in which the prefix is not generated for the ordered list. The dump of the tree is correct, however:

 Document └─ UnorderedList └─ ListItem ├─ Paragraph │ └─ Text "This is a top-level bulleted list" └─ UnorderedList ├─ ListItem │ └─ Paragraph │ └─ Text "This is second-level bulleted list" └─ ListItem ├─ Paragraph │ └─ Text "Second of the second" └─ OrderedList ├─ ListItem │ └─ Paragraph │ └─ Text "This is ordered and second-order nested" └─ ListItem └─ Paragraph └─ Text "Second entry of same" 

The above AST shows that the OrderedList is a child of the ListItem and not of the UnorderedList, so it should be indented accordingly when rendered.

Dependencies

None

Testing

I sanity tested with the above examples and ran on some other markdown to verify that the output seems sane.

[dexterleng]

Please merge this!

[Lontronix]

I'm also being impacted by this, would love to see it be merged soon.