.tmux.conf

unbind C-b
set -g prefix C-a
bind -r a send-prefix
bind C-a last-window

if-shell 'test "$(uname -s)" = Darwin' 'set-option -g default-command "exec reattach-to-user-namespace -l bash"'

# Set reload key to r
bind r source-file ~/.tmux.conf \; display-message "~/.tmux.conf reloaded"

# repeated space/backspace toggles windows forward/backwards
bind -r Space next-window
bind -r C-Space next-window
bind -r C-h previous-window
bind -r C-? previous-window

# Use vim bindings
setw -g mode-keys vi

# 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 "$is_vim" "send-keys C-l"  "select-pane -R"
bind-key -n C-\ if-shell "$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

# Set the title bar
set -g set-titles on
set -g set-titles-string '#h'

# renumber windows as they are created and destroyed
set-option -g renumber-windows on

# new windows should open in the cwd of the active pane
bind c new-window -c '#{pane_current_path}'

# create splits
bind - split-window -v -c '#{pane_current_path}'
bind \ split-window -h -c '#{pane_current_path}'

# resize splits
bind -n S-Left resize-pane -L 2
bind -n S-Right resize-pane -R 2
bind -n S-Down resize-pane -D 1
bind -n S-Up resize-pane -U 1

bind -n M-Left resize-pane -L 10
bind -n M-Right resize-pane -R 10
bind -n M-Down resize-pane -D 5
bind -n M-Up resize-pane -U 5

bind K unlink-window

# make prefix+S toggle status line visibility
bind S set -g status

# increase the history buffer length from the default of 2000
set -g history-limit 20000

# enable 256 color support
set -g default-terminal "xterm-256color"
set -ga terminal-overrides ",xterm-256color:Tc"

# setup status bar
set -g status-bg '#666666'
set -g status-fg '#aaaaaa'
set -g status-interval 5

# pane movement
bind-key j command-prompt -p "join pane from:"  "join-pane -s '%%'"
bind-key s command-prompt -p "send pane to:"  "join-pane -t '%%'"

set -g status-left-length 50
set -g status-left "#S %H:%M "
set -g status-right "#h: #(uptime |awk -F 'load average.*:' '{ print $2 }')"

set -w -g window-status-current-bg black
set -w -g window-status-current-fg white

set -s escape-time 0

# bind tree session switcher
bind-key C-j choose-tree