Re: t_fe and t_fd in tmux corrupts split with ^[[O

Enan Ajmain wrote:

> I have this in my vimrc according to ":h xterm-focus-event":
>
> if &term =~ '\v^(screen|tmux)'
> let &t_fe = "\<Esc>[?1004h"
> let &t_fd = "\<Esc>[?1004l"
> endif
>
> With it in tmux, when I switch panes, the pane with Vim running shows a
> control sequence "^[[O" where "^[" is Esc.

You need to tell Vim to recognize these escape sequences:

execute "set <FocusGained>=\<Esc>[I"
execute "set <FocusLost>=\<Esc>[O"

Since this is quite common it was made the default in patch 9.0.1619.
You only need to define the escape sequences for older Vim versions.


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