Confused by what command is "dot repeatable"

[York Zhao]

> Hi,
>
> I still find myself confused by the "dot repeating" in Evil. I have many
> commands, some of them are "automatically" dot repeatable but others are not.
> For example, I have these two commands:
>
> (defun foo ()
>   (interactive)
>
>   ...
>
>   (kill-region beg end)
>
>   ...
>
>   (insert ...)
>
>   ...)
>
>
> (defun bar ()
>   (interactive)
>
>   ...
>   (insert ...))
>
> I don't see any essential difference between these two commands, except that
> `foo' was being executed in org-mode while `bar' in c++-mode. And I have no idea
> why command "foo" is dot repeatable but "bar" is not. I had tried using
>
> (evil-declare-change-repeat 'bar)
>
> but still, "bar" is not "dot" repeatable. I'm confused by what has made "foo"
> repeatable. I don't have time to look deeply in the repeat system in Evil so I
> would appreciate it if someone could give me some quick answer to my question.
>
> Thanks,
> York

Anybody?