tmux.conf

# https://github.com/tmux/tmux/issues/1246
set -g default-terminal "tmux-256color"
set -ga terminal-overrides ",*256col*:Tc"

set-option -g default-shell /bin/zsh

# Fix delay
# http://unix.stackexchange.com/questions/23138/esc-key-causes-a-small-delay-in-terminal-due-to-its-alt-behavior
set -s escape-time 0

# border around active pane
set-option -g pane-active-border fg=blue

# tmux prefix
unbind C-b
set -g prefix C-Space
bind C-Space send-prefix

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

# start window index at 1
set -g base-index 1

# start pane index at 1
setw -g pane-base-index 1

# use VI
set-window-option -g mode-keys vi

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

# Smart pane switching with awareness of Vim splits.
# * 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 -n 'C-Space' if-shell "$is_vim" 'send-keys C-Space' 'select-pane -t:.+'

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
bind-key -T copy-mode-vi 'C-Space' select-pane -t:.+

bind '"' split-window -c "#{pane_current_path}"
bind % split-window -h -c "#{pane_current_path}"
bind c new-window -c "#{pane_current_path}"

# Ctrl + Shift + left/right -> swap windows
bind-key -n C-S-Left swap-window -t -1
bind-key -n C-S-Right swap-window -t +1

# Ctrl + o : Previous / Ctrl + p : Next window
bind -n C-o run "tmux previous-window"
bind -n C-p run "tmux next-window"

bind f resize-pane -L 40
bind g resize-pane -R 40

# Disable time in the status

set -g status-right '#H'
set -g status-left-length 20

set -g default-shell $SHELL
set -g default-command "reattach-to-user-namespace -l ${SHELL}"

set -g mouse on