Re: (Un)comment line(s) with markers at arbitrary position(s) in this/these line.

[Tassilo Horn]

Hongyi Zhao <hongyi.zhao@gmail.com> writes:

>> Use comment-line instead of comment-dwim.
>
> But when I try `C-x C-;`, the weird behavior is triggered, as shown in
> the attached file.

That popup is not from emacs, isn't it?  I guess you window manager
captures the key so that emacs never sees it.  You can test that
assumption by doing C-h k C-x C-;.  If emacs doesn't react and tell you
what this key is bound to, then something captures it.

Bye,
Tassilo