# helper to decide whether we are inside (n)vim
is_vim="ps -o state= -o comm= -t '#{pane_tty}' \
	| grep -iqE '^[^TXZ ]+ +(\\$+\\/)?g?(view|n?vim?x?)(diff)?$'"

# Correct binding depending on version
if-shell -b '[[ "$(tmux -V)" == tmux\ 2.* ]]' \
    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\' 'select-pane -l'"
if-shell -b '[[ "$(tmux -V)" == tmux\ 3.* ]]' \
    "bind-key -n 'C-\\' if-shell \"$is_vim\" 'send-keys C-\\\\' 'select-pane -l'"

# Bindings
bind-key -n 'C-Space' if-shell "$is_vim" 'send-keys C-Space' 'select-pane -t:.+'

bind-key -n 'M-h' if-shell "$is_vim" 'send-keys M-h' 'select-pane -L'
bind-key -n 'M-j' if-shell "$is_vim" 'send-keys M-j' 'select-pane -D'
bind-key -n 'M-k' if-shell "$is_vim" 'send-keys M-k' 'select-pane -U'
bind-key -n 'M-l' if-shell "$is_vim" 'send-keys M-l' 'select-pane -R'

bind-key -n 'M-Left' if-shell "$is_vim" 'send-keys M-h' 'select-pane -L'
bind-key -n 'M-Down' if-shell "$is_vim" 'send-keys M-j' 'select-pane -D'
bind-key -n 'M-Up' if-shell "$is_vim" 'send-keys M-k' 'select-pane -U'
bind-key -n 'M-Right' if-shell "$is_vim" 'send-keys M-l' 'select-pane -R'

bind-key -T copy-mode-vi 'M-h' select-pane -L
bind-key -T copy-mode-vi 'M-j' select-pane -D
bind-key -T copy-mode-vi 'M-k' select-pane -U
bind-key -T copy-mode-vi 'M-l' select-pane -R
bind-key -T copy-mode-vi 'C-\' select-pane -l
bind-key -T copy-mode-vi 'C-Space' select-pane -t:.+