dot_tmux.conf

set-option -g          status-keys emacs
set-window-option -g   mode-keys vi

# tmux normally sets the default terminal to "screen" which
# only supports 8 colors. So then we lose the pretty ls
# colouring. :(
set-option -g          default-terminal "xterm-256color"

# True color override
set-option -ag          terminal-overrides ',xterm-256color:Tc'

# Fix for drawing borders correctly in containers
# https://github.com/tmux/tmux/issues/224
#if-shell "[ -f /.dockerenv ] || [ -f /run/.containerenv ]" \
#    'set-option -ag terminal-overrides \',*:cud1=\E[1B\''

# Change prefix to C-a, but only if we're not nested (this is set by our
# dotfiles `apply` script).
if-shell "[ ! -f ~/.tmux.conf.nested ]" {
    unbind-key C-b
    set-option -g prefix C-a
    bind-key C-a send-prefix
}

# address vim mode switching delay (http://superuser.com/a/252717/65504)
set-option -s          escape-time 0

# display tmux messages for 4s
set-option -g          display-time 4000

# refresh status bar more often
set-option -g          status-interval 5

# allow focus events from terminal
set-option -g          focus-events on

set-option -g	       history-limit 100000
set-option -g	       buffer-limit 100
set-option -g          repeat-time 350

set-option -g          mouse on

set-window-option -g   allow-rename off
set-window-option -g   xterm-keys on
set-window-option -g   renumber-windows on

bind-key	       C-j select-pane -D
bind-key	       C-k select-pane -U
bind-key	       C-h select-pane -L
bind-key	       C-l select-pane -R

bind-key	       C-y run "tmux show-buffer | xsel -i"
bind-key	       C-p run "xsel -o | tmux load-buffer -"

bind-key -r	       M-k resize-pane -U 5
bind-key -r	       M-j resize-pane -D 5
bind-key -r	       M-h resize-pane -L 5
bind-key -r	       M-l resize-pane -R 5
bind-key -r	       k   resize-pane -U
bind-key -r	       j   resize-pane -D
bind-key -r	       h   resize-pane -L
bind-key -r	       l   resize-pane -R

# maximize height of this pane
bind-key               e   resize-pane -y 999

#bind-key -r            { swap-pane -U
#bind-key -r            } swap-pane -D

bind-key               / last-window
bind-key               \; last-pane

bind-key -r	       C-u swap-window -t +1 \; select-window -t +1
bind-key -r	       C-i swap-window -t -1 \; select-window -t -1
bind-key -r            n next-window
bind-key -r            p previous-window

bind-key               C clear-history

# this is like Enter, except it doesn't cause tmux to exit
# copy mode, so we can more easily copy multiple things in a
# row
bind-key -T copy-mode-vi C-j send-keys -X copy-selection
bind-key C-y run-shell "tmux show-buffer | xsel -bi"

# these are overrides for hotkeys that are already mapped

# the default doesn't include -u
bind-key             s choose-tree
bind-key             '"' split-window -c "#{pane_current_path}"
bind-key             % split-window -h -c "#{pane_current_path}"

bind-key             v run-shell "tmux-paste-slow"

# GNOME Terminal doesn't support setting the clipboard, so
# it just looks like tmux barfs characters all over the
# screen when you copy a selection.
# http://askubuntu.com/questions/507214/
set-option -s set-clipboard off

# force a full redraw on bell events so that the target
# window's title gets highlighted right away in the status
# bar
# https://github.com/tmux/tmux/issues/685
set-hook -g alert-bell refresh-client

# allow longer session names without truncating
set-option -g status-left-length 30

# White on black rather than black on green, but only if we're not nested (this
# is set by our dotfiles `apply` script).
if-shell "[ ! -f ~/.tmux.conf.nested ]" {
    set-option -g status-style 'bg=#000000,fg=white'
    set-option -g window-status-style 'bg=#000000,fg=white'
    set-option -g window-status-last-style 'bg=#000000,fg=white'
    set-option -g window-status-current-style 'bg=#000000,fg=white,bold'
}

set-option -g pane-active-border-style 'fg=red'
set-option -g pane-border-lines 'heavy'