literal representation restructure 7
literal representation restructure 7

Replace `do_lint` with `get_group_size`. Return `None` if there are no
groups.

graydon/rust,aidancully/rust,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust,graydon/rust,aidancully/rust,aidancully/rust