shell in tmux does not execute commands, enter does not work.

[benibilme]

Hello,

OS: manjaro 5.10.192-1-MANJARO
bash: 5.1.16(1) tmux: 3.3_a.7

I have following tmux configuration. In the provided configuration, the section marked between ===, has been directly copied and pasted from vim-tmux-navigator installation manual. I have only adjusted the keys according to my non latin1 keyboard for left, down, up, right movements which are respectively t,k,m,l in my system. I did not use provided plugin since I did not know how to change default keys to my custom keys in the plugin which is not mentioned in the documentation, so I had to copy and paste the configuration sniplet.

The modified configuration breaks enter command. The behavior can be repeated with following simple case. Open a terminal, start tmux, type any command in tmux, press Enter. Enter is not recognized.

However, original configuration, without my key modifications work. I kindly appreciate any insight why my re-mappings cause the problem.

Thanks in advance.

# activate mouse support
set -g mouse on

# start window index at 1 instead of 0
set -g base-index 1

setw -g pane-base-index 1

# highlight window when it has new activity
setw -g monitor-activity on
set  -g visual-activity  on

# re-number windows when one is closed
set -g renumber-windows on

#==============================================================

# Smart pane switching with awareness of Vim splits.
# See: https://github.com/christoomey/vim-tmux-navigator
is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
    | grep -iqE '^[^TXZ ]+ +(\\S+\\/)?g?(view|l?n?vim?x?)(diff)?$'"
bind-key -n 'C-t' if-shell "$is_vim" 'send-keys C-t'  'select-pane -L'
bind-key -n 'C-k' if-shell "$is_vim" 'send-keys C-k'  'select-pane -D'
bind-key -n 'C-m' if-shell "$is_vim" 'send-keys C-m'  'select-pane -U'
bind-key -n 'C-l' if-shell "$is_vim" 'send-keys C-l'  'select-pane -R'

tmux_version='$(tmux -V | sed -En "s/^tmux ([0-9]+(.[0-9]+)?).*/\1/p")'
if-shell -b '[ "$(echo "$tmux_version < 3.0" | bc)" = 1 ]' \
    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\'  'select-pane -l'"
if-shell -b '[ "$(echo "$tmux_version >= 3.0" | bc)" = 1 ]' \
    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\\\'  'select-pane -l'"

bind-key -T copy-mode-vi 'C-t' select-pane -L
bind-key -T copy-mode-vi 'C-k' select-pane -D
bind-key -T copy-mode-vi 'C-m' select-pane -U
bind-key -T copy-mode-vi 'C-l' select-pane -R
bind-key -T copy-mode-vi 'C-\' select-pane -l

#=============================================================

bind 'v' split-window -h -c '#{pane_current_path}'  # Split panes horizontal
bind 'h' split-window -v -c '#{pane_current_path}'  # Split panes vertically
bind 'c' new-window -c '#{pane_current_path}' # Create new window'"'

# Easier and faster switching between next/prev window
bind-key -n C-S-t swap-window -t -1\; select-window -t -1
bind-key -n C-S-l swap-window -t +1\; select-window -t +1

setenv -g TMUX_PLUGIN_MANAGER_PATH "$HOME/.config/tmux/plugins/"

# List of plugins
set -g @plugin 'tmux-plugins/tpm'

# Initialize TMUX plugin manager (keep this line at the very bottom of tmux.conf)
run '~/.config/tmux/plugins/tpm/tpm'

[christoomey]

'C-m' is interpreted as enter. You can test this with tmux bind-key -n 'C-m' display-message 'hello world'. I'm going to close this now as this isn't an issue with the plugin, but hopefully that helps point you in the right direction.

[benibilme]

Hello,

Thank you for the reply. Unfortunately I am totally dumb tmux user and clueless in its internal workings. Now can I solve this issue? Is possible to assign something else to enter?

[christoomey]

I'm not super familiar with this space myself, but I believe the issue is that the terminal interprets C-m as enter and I don't believe you can change this. Definitely possible that I'm wrong here, but that's my understanding.