tmux.conf

set -wg mode-keys vi
set -g mouse on
set -g pane-border-style fg=blue
set -sg escape-time 0  # default is 500
# MacOS doesn't know about tmux-256color
#set -g default-terminal "tmux-256color"
set -g default-terminal "screen-256color"
set -g set-titles on
set -g set-clipboard 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|n?vim?x?)(diff)?$'"
bind-key -n 'C-h' if-shell "$is_vim" 'send-keys C-h'  'select-pane -L'
bind-key -n 'C-j' if-shell "$is_vim" 'send-keys C-j'  'select-pane -D'
bind-key -n 'C-k' if-shell "$is_vim" 'send-keys C-k'  '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-h' select-pane -L
bind-key -T copy-mode-vi 'C-j' select-pane -D
bind-key -T copy-mode-vi 'C-k' select-pane -U
bind-key -T copy-mode-vi 'C-l' select-pane -R
bind-key -T copy-mode-vi 'C-\' select-pane -l

# vim-tmux-resizer bindings
bind -n M-h if-shell "$is_vim" "send-keys M-h" "resize-pane -L 10"
bind -n M-l if-shell "$is_vim" "send-keys M-l" "resize-pane -R 10"
bind -n M-k if-shell "$is_vim" "send-keys M-k" "resize-pane -U 5"
bind -n M-j if-shell "$is_vim" "send-keys M-j" "resize-pane -D 5"

# Make tmux start non-login shells and in the current directory
#   https://wiki.archlinux.org/index.php/tmux#Start_a_non-login_shell
bind c new-window -c "#{pane_current_path}" "${SHELL} -i"
bind '"' split-window -c "#{pane_current_path}" "${SHELL} -i"
bind % split-window -h -c "#{pane_current_path}" "${SHELL} -i"

# bind C-t setw synchronize-panes \;\
#     display "Synch Panes Toggled"\;

bind S choose-window "join-pane -v -s "%%""
bind V choose-window "join-pane -h -s "%%""