Parsing of nested lists

Hi,
I am using the classes added by CodeMirror to style lists in the edit mode.
CodeMirror adds a `cm-formatting-list-ul` / `cm-formatting-list-ol` class to each list marker (`+-*`).
This makes it very convenient to already style these list items in edit mode. However I noticed that these classes are only applied on the outermost level. E.g. in the example below, the `*` before `sub list item 1` won't get the `cm-formatting-list-ul` class. If anyone could point me into any direction on how to get EasyMDE or CodeMirror to also parse these nested lists, that would be great!
````
- list item 1
- list item 2
* sub list item 1
* sub list item 2
````