beginning and end of line keys not working

[alxsimon]

Issue description

Hi, sorry if the answer is straightforward but I have been banging my head on this for hours.

Outside tmux either ctrl + A or Home work to go to beginning of line (idem for end of line).
I am using alacritty and zsh on Fedora 37.

Inside tmux, using ctrl + A sends ^A and Home does a weird uppercase thing and enters some kind of mode I can only exit with ctrl + C.

Outside tmux Home sends ^[[H
Inside tmux Home sends ^[[1~

my tmux.conf

Any pointer to where the issue might be would be greatly appreciated.

Required information

Please provide the following information:

• tmux version (tmux -V). 3.3a
• Platform (uname -sp). Linux x86_64
• $TERM inside and outside of tmux (echo $TERM). 'xterm-256colors' / 'tmux-256colors'
• Logs from tmux:
  tmux-client-367678.log
  tmux-out-367680.log
  tmux-server-367680.log

[nicm]

Run cat inside tmux and check what you see when you press the keys. Home should send ^[[1~.

It sounds like your shell is not configured correctly if it does not recognise it.

[alxsimon]

yes Home correctly sends ^[[1~ inside tmux

[alxsimon]

ok I see, I managed to map the keycodes in my zshrc for home and end.

Howether I still have the issue of ctrl+A printing a ^A instead of going to the beginning of line.
Do I also have to remap those? This should work by default no?

[nicm]

tmux is sending ^A so it is doing its job... are you sure you haven't got zsh configured for vi keys or something instead of emacs?

[alxsimon]

Not that I know of no. The weird thing is that zsh is behaving correctly outside of tmux. Outside of tmux ^A behaves correctly as beginning-of-line.

[alxsimon]

ok found the issue I think for anyone having the same problem.
Even if emacs mode is the default in zsh, vi mode can be triggered automatically if $EDITOR or $VISUAL contain vi (https://serverfault.com/questions/844215/remote-zsh-and-moving-to-beginning-of-line-gives-a-print). (which in my case is nvim).
So I have to explicitly put bindkey -e in my .zshrc .

[krader1961]

@alxsimon, that would seem to be only half the story since you claim it works outside of tmux but not inside a tmux session. So somehow you've configured the environment to have a differentEDITOR or VISUAL env var inside a tmux session than outside of tmux.

[alxsimon]

It seems so but I can't find any reason for that, those two variables are set to nvim in both cases through my .profile file, which is then sourced in my .zshrc. ¯(°_o)/¯

[alxsimon]

Anyway, thanks a lot for the quick answers! Feel free to close the issue as this seems to be more an issue with zsh than with tmux.

[github-actions]

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