John Gruber’s syntax guide defines the ordered list syntax as follows:
Ordered lists use numbers followed by periods:
Unlike the unordered list syntax, there is only one variation.
However, it is common for writers to use brackets to define list items instead of periods. My suggestion is to add two variations to the ordered list syntax:
This syntax has likely been implemented in other Markdown flavours already, but I think we should discuss if and how it should be added to CommonMark - as an extension or as part of the core syntax?
This suggestion applies to letter-order lists as well.