If evil is slow to exit insert mode in tmux
reddit / emacs

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bruchieOP · 2022-10-04 02:56

Something driving me (a bit) crazy when  using emacs in a tmux session
on a slow remote host.

It would take quite a bit of time (we are talking 0.3s but enough to
be annoying) to exit the normal mode when inside a tmux session. It
would then do some crazy things too between those 0.3s if I start
typing some letters...

I discovered this [spacemacs
issue](https://github.com/syl20bnr/spacemacs/issues/7145) and buried
in the comments this tmux setting :

    set -s escape-time 0

which works exactly as intended and give you an exit to normal mode
straight away...

so if anyone else has this issue and find this post then I guess you
are welcome internet stranger :)

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lebensterben · 2022-10-04 03:49

this ultimately results from the problem that most terminals cannot
easily differentiate a single press of Esc and the Esc preceding
escape codes....

see https://sw.kovidgoyal.net/kitty/keyboard-protocol/

in particular
> No reliable way to distinguish single Esc key presses from the start
of a escape sequence. Currently, client programs use fragile timing
related hacks for this, leading to bugs, for example: neovim #2035.

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bruchieOP · 2022-10-04 03:56

great article, thanks! (and i use tmux inside kitty)

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lebensterben · 2022-10-04 04:03

I think then it's up to tmux to utilize kitty's new protocol.

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[deleted] · 2022-10-04 04:38

[deleted]