vim-repeat mappings (`.`, `u`, etc) emits CmdlineLeave event which disrupts im-select.nvim

[kkew3]

Hi, thanks for this great plugin.

I'm using keaising/im-select.nvim to change input methods (IM) (e.g. between English and Chinese). I find that CmdlineLeave must be removed from set_default_events (see example from https://github.com/keaising/im-select.nvim#2-install-and-setup-this-plugin) for vim-repeat's . and u to not unexpectedly reset the IM. This is because

vim-repeat/autoload/repeat.vim

Lines 132 to 135 in 6584602

	nnoremap <silent> <Plug>(RepeatDot) :<C-U>if !repeat#run(v:count)<Bar>echoerr repeat#errmsg()<Bar>endif<CR>
	nmap <silent><expr><script> <Plug>(RepeatUndo) repeat#wrap('u',v:count)
	nmap <silent><expr><script> <Plug>(RepeatUndoLine) repeat#wrap('U',v:count)
	nmap <silent><expr><script> <Plug>(RepeatRedo) repeat#wrap("\022",v:count)

uses :<C-u>...<CR> which enters cmdline then leaves, emitting an unwanted CmdlineLeave event.

FYI in Nov 2020, Vim-8.2.1978 introduced <Cmd> mapping. If the above pattern is replaced with <Cmd>...<CR>, then the issue will be resolved. I'm willing to submit a pull request for it.

For more context, see:

• jieba.vim配合im-select.nvim使用存在问题 kkew3/jieba.vim#83 (in Chinese).
• Use <Cmd> mapping as an attempt to fully resolve issue #83 kkew3/jieba.vim#111 (in English).

Thank you so much!