When in tmux copy mode, I'd like to move the cursor with some Alt+key combos rather than the arrows. Is there a way to make tmux do this?
Here are the definitions I'd like:
Alt+i: up Alt+l: right Alt+j: left Alt+k: down Alt+o: forward word Alt+u: backward word I do not want to switch tmux over to vi mode.
Turns out you have to edit the key bindings for the emacs-copy table. Here's how I made the changes that I wanted above.
First, I checked out what the current bindings were by entering the following command in tmux (by pressing Prefix+colon) list-keys -t emacs-copy. This gave me a list of the keys that were bound in emacs-copy mode and I looked through them to figure out which commands did what I wanted.
Then, I added the appropriate key bindings to my ~/.tmux.conf file like so:
bind-key -t emacs-copy M-j cursor-left bind-key -t emacs-copy M-i cursor-up bind-key -t emacs-copy M-l cursor-right bind-key -t emacs-copy M-k cursor-down bind-key -t emacs-copy M-u previous-word bind-key -t emacs-copy M-o next-word Finally, I ran the tmux command source ~/.tmux.conf inside tmux to get the keys bound without having to exit and reload the session.
This (apparently) has changed in more recent tmux versions: In 2.9a, there does not seem to be an emacs-copy key table (but there's a copy-mode), and the bind-key argument for key tables is (only) -T (note upper case). So to e.g. have Ctrl-Left/Right jump words in copy/mode:
bind-key -T copy-mode C-Left send-key -X previous-word bind-key -T copy-mode C-Right send-key -X next-word 