How to enter "Esc" when editing file in vim with libtmux?

[DavdGao]

I'm trying to editing text files in vim with libtmux. In edit mode, I don't know how to pass the Esc to the vim in the send_keys method.

Similar problems exist with the other special keys like Ctrl and Alt

[tony]

Pane.send_keys() is a wrapper on top of tmux send-keys.

I'm not sure about Esc, but for Ctrl you would do C, e.g. C-a instead of Ctrl-a

Alt would be M, e.g. M-a instead of Alt-a.

Aside: Perhaps we can add some docs and additional tests on this.