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Q&A Allow extended keys in tmux?

I'm trying to get tmux to pass through extended keys to my terminal. In particular Shift+Enter and Ctrl+Enter. I'm attempting to utilize this in Vim by mapping the two key combinations. My termina...

0 answers  ·  posted 6mo ago by rcmosher‭  ·  edited 6mo ago by rcmosher‭

Question tmux
#2: Post edited by user avatar rcmosher‭ · 2024-05-29T14:32:21Z (6 months ago)
Adding evidence this works outside tmux. Reorganize.
  • I'm trying to get tmux to pass through extended keys to my terminal. In particular Shift+Enter and Ctrl+Enter. I'm attempting to utilize this in Vim by mapping the two key combinations.
  • My terminal is alacritty and I have Shift+Enter and Ctrl+Enter working when I'm not inside of tmux. `TERM=alacritty` outside of tmux. In tmux `TERM=tmux-256color`.
  • I added the following configuration to alacritty to allow passing the extended keys:
  • ```
  • [[keyboard.bindings]]
  • chars = "\u001B[13;2u"
  • key = "Return"
  • mods = "Shift"
  • [[keyboard.bindings]]
  • chars = "\u001B[13;5u"
  • key = "Return"
  • mods = "Control"
  • ```
  • I've tried both of the following in my .tmux.conf, without success:
  • `set-option -s -a extended-keys always`
  • ```
  • set -s extended-keys on
  • set-option -g xterm-keys on
  • set -as terminal-features 'xterm*:extkeys'
  • set-option -g allow-passthrough on
  • ```
  • How can I allow extended keys while in tmux?
  • I'm trying to get tmux to pass through extended keys to my terminal. In particular Shift+Enter and Ctrl+Enter. I'm attempting to utilize this in Vim by mapping the two key combinations.
  • My terminal is alacritty.
  • The value of `TERM`:
  • * Outside tmux: `TERM=alacritty`
  • * Inside tmux: `TERM=tmux-256color`
  • I added the following configuration to alacritty to allow passing the extended keys:
  • ```
  • [[keyboard.bindings]]
  • chars = "\u001B[13;2u"
  • key = "Return"
  • mods = "Shift"
  • [[keyboard.bindings]]
  • chars = "\u001B[13;5u"
  • key = "Return"
  • mods = "Control"
  • ```
  • I've tried both of the following in my .tmux.conf, without success:
  • `set-option -s -a extended-keys always`
  • ```
  • set -s extended-keys on
  • set-option -g xterm-keys on
  • set -as terminal-features 'xterm*:extkeys'
  • set-option -g allow-passthrough on
  • ```
  • I've confirmed Shift+Enter and Ctrl+Enter work when I'm not inside of tmux.
  • In bash:
  • * `Ctrl+V Ctrl+Enter` outputs `^[[13;5u`
  • * `Ctrl-V Shift+Enter` outputs `^[[13;2u`
  • In vim:
  • * `nnoremap <C-Enter> iCtrl-Enter pressed^[` works
  • * `nnoremap <S-Enter> iCtrl-Shift pressed^[` works
  • In tmux the above keystrokes output nothing. The mappings also don't work in vim when run in tmux.
  • How can I allow extended keys while in tmux?
#1: Initial revision by user avatar rcmosher‭ · 2024-05-22T15:13:41Z (6 months ago)
Allow extended keys in tmux?
I'm trying to get tmux to pass through extended keys to my terminal. In particular Shift+Enter and Ctrl+Enter. I'm attempting to utilize this in Vim by mapping the two key combinations.

My terminal is alacritty and I have Shift+Enter and Ctrl+Enter working when I'm not inside of tmux. `TERM=alacritty` outside of tmux. In tmux `TERM=tmux-256color`.

I added the following configuration to alacritty to allow passing the extended keys:
```
[[keyboard.bindings]]
chars = "\u001B[13;2u"
key = "Return"
mods = "Shift"

[[keyboard.bindings]]
chars = "\u001B[13;5u"
key = "Return"
mods = "Control"
```

I've tried both of the following in my .tmux.conf, without success:

`set-option -s -a extended-keys always`

```
set -s extended-keys on
set-option -g xterm-keys on
set -as terminal-features 'xterm*:extkeys'
set-option -g allow-passthrough on
```

How can I allow extended keys while in tmux?