So one of the reasons I wanted `<Backspace>` and `<Enter>` was because they match the codemirror names. If you use `<CR>`, then this mapping won't work for those keys.

To fix this, either special case the mapping here for those 2 keys, or change usages of `<CR>` and `<BS>` back. Either way, the various aliases for `<CR>` should be accounted for in `parseKeyString` in the ex mode code.