# cat << ►_◄ > /dev/null


# -- general -------------------------------------------------------------------

set -g default-terminal "screen-256color" # colors!
setw -g xterm-keys on
set -s escape-time 0                      # fastest command sequences
set -s repeat-time 600                    # increase repeat timeout
set -s quiet on                           # disable various messages

set -g prefix2 C-a                        # GNU-Screen compatible prefix
bind C-a send-prefix -2

# uncomment to force vi-style key bindings
# emacs is the default unless $EDITOR or $VISUAL contain 'vi'
#set -g status-keys vi
#setw -g mode-keys vi

set -g status-utf8 on                     # expect UTF-8
setw -g utf8 on

set history-limit 5000                    # boost history

# edit configuration
bind e new-window -n '~/.tmux.conf' '${EDITOR:-vim} ~/.tmux.conf && tmux source ~/.tmux.conf && tmux display "~/.tmux.conf sourced"'

# reload configuration
bind r source-file ~/.tmux.conf \; display '~/.tmux.conf sourced'


# -- display -------------------------------------------------------------------

set -g base-index 1         # start windows numbering at 1
setw -g pane-base-index 1   # make pane numbering consistent with windows

setw -g automatic-rename on # rename window to reflect current program
# renumber windows when a window is closed, tmux > 1.6
if '[ $(echo "$(tmux -V | cut -d' ' -f 2) > 1.6" | bc) -eq 1 ]' 'set -g renumber-windows on'

set -g set-titles on                        # set terminal title
set -g set-titles-string '#h ❐ #S ● #I #W'

set -g display-panes-time 800 # slightly longer pane indicators display time
set -g display-time 1000      # slightly longer status messages display time

set -g status-interval 10     # redraw status line every 10 seconds

# 24 hour clock
setw -g clock-mode-style 24

# clear both screen and history
bind -n C-l send-keys C-l \; run 'tmux clear-history'

# activity
set -g monitor-activity on
set -g visual-activity off

# tmux theme, colors and status line
# available themes:
#   - powerline (a powerline inspired theme)
#   - powerline_patched_font (a powerline inspired theme using a patched font)
tmux_conf_theme=powerline


# -- navigation ----------------------------------------------------------------

# create new session
bind C-c new-session

# find session
bind C-f command-prompt -p find-session 'switch-client -t %%'

# split current window vertically
bind _ split-window -h
# split current window horizontally
bind - split-window -v

# pane navigation
bind -r h select-pane -L  # move left
bind -r j select-pane -D  # move down
bind -r k select-pane -U  # move up
bind -r l select-pane -R  # move right
bind > swap-pane -D       # swap current pane with the next one
bind < swap-pane -U       # swap current pane with the previous one

# maximize current pane
bind + run 'cut -c3- ~/.tmux.conf | sh -s maximize_pane'

# pane resizing
bind -r H resize-pane -L 2
bind -r J resize-pane -D 2
bind -r K resize-pane -U 2
bind -r L resize-pane -R 2

# window navigation
bind -r C-h previous-window # select previous window
bind -r C-l next-window     # select next window
bind Space last-window      # move to last active window

# toggle mouse
bind m run "cut -c3- ~/.tmux.conf | sh -s toggle_mouse"


# -- copy mode -----------------------------------------------------------------

bind Enter copy-mode # enter copy mode
bind b list-buffers  # list paster buffers
bind p paste-buffer  # paste from the top pate buffer
bind P choose-buffer # choose which buffer to paste from

# the following vi-copy bindings match my vim settings
#   see https://github.com/gpakosz/.vim.git
bind -t vi-copy v begin-selection
bind -t vi-copy C-v rectangle-toggle
bind -t vi-copy y copy-selection
bind -t vi-copy Escape cancel
bind -t vi-copy H start-of-line
bind -t vi-copy L end-of-line

# -- user defined --------------------------------------------------------------

source ~/.tmux.conf.local


# -- 8< ------------------------------------------------------------------------

run 'cut -c3- ~/.tmux.conf | sh -s apply_theme $tmux_conf_theme'
run 'for name in $(printenv | grep -Eo ^tmux_conf_[^=]+); do tmux setenv -gu $name; done;'


# ►_◄

# # exit the script if any statement returns a non-true return value
# set -e
# # exit the script on dereferencing uninitialised variables
# set -o nounset
#
# apply_theme() {
#   case "$1" in
#     powerline_patched_font)
#       left_separator_light='⮁'
#       left_separator_bold='⮀'
#       right_separator_light='⮃'
#       right_separator_bold='⮂'
#       ;;
#     powerline)
#       left_separator_light='|'
#       left_separator_bold=' '
#       right_separator_light='|'
#       right_separator_bold=' '
#       ;;
#   esac
#
#   case "$1" in
#     powerline*)
#
#       # panes
#       pane_border_fg=colour238        # light gray
#       pane_active_border_fg=colour39  # light blue
#
#       tmux set -g pane-border-fg $pane_border_fg \; set -g pane-active-border-fg $pane_active_border_fg
#       #uncomment for fat borders
#       #tmux set -g pane-border-bg $pane_border_fg \; set -g pane-active-border-bg $pane_active_border_fg
#
#       display_panes_active_colour=colour39 # light blue
#       display_panes_colour=colour39        # light blue
#       tmux set -g display-panes-active-colour $display_panes_active_colour \; set -g display-panes-colour $display_panes_colour
#
#       # messages
#       message_attr=bold
#       message_fg=colour16   #black
#       message_bg=colour226  #yellow
#       tmux set -g message-attr $message_attr \; set -g message-fg $message_fg \; set -g message-bg $message_bg
#
#       # windows mode
#       mode_attr=bold
#       mode_fg=colour16   #black
#       mode_bg=colour226  #yellow
#       tmux setw -g mode-attr $mode_attr \; set -g mode-fg $mode_fg \; set -g mode-bg $mode_bg
#
#       # status line
#       status_fg=colour253 # white
#       status_bg=colour232 # dark gray
#       tmux set -g status-fg $status_fg \; set -g status-bg $status_bg
#
#       session_fg=colour16  # black
#       session_bg=colour226 # yellow
#       status_left="#[fg=$session_fg,bg=$session_bg,bold] ❐ #S #[fg=$session_bg,bg=$status_bg,nobold]$left_separator_bold"
#       tmux set -g status-left-length 32 \; set -g status-left "$status_left"
#
#       window_status_fg=colour245 # light gray
#       window_status_bg=colour232 # dark gray
#       window_status_format="#I #W"
#       tmux setw -g window-status-fg "$window_status_fg" \; setw -g window-status-bg "$window_status_bg" \; setw -g window-status-format "$window_status_format"
#
#       window_status_current_fg=colour16 # black
#       window_status_current_bg=colour39 # light blue
#       window_status_current_format="#[fg=$window_status_bg,bg=$window_status_current_bg]$left_separator_bold#[fg=$window_status_current_fg,bg=$window_status_current_bg,noreverse,bold] #I $left_separator_light #W #[fg=$window_status_current_bg,bg=$status_bg,nobold]$left_separator_bold"
#       tmux setw -g window-status-current-format "$window_status_current_format"
#       tmux set -g status-justify left
#
#       window_status_activity_attr=underscore
#       window_status_activity_fg=default
#       window_status_activity_bg=default
#       tmux setw -g window-status-activity-attr "$window_status_activity_attr" \; setw -g window-status-activity-fg "$window_status_activity_fg" \; setw -g window-status-activity-bg "$window_status_activity_bg"
#
#       time_date_fg=colour245  # light gray
#       time_date_bg=colour232  # dark gray
#       whoami_fg=colour254     # white
#       whoami_bg=colour160     # red
#       host_fg=colour16        # black
#       host_bg=colour254       # white
#       status_right="#[fg=$time_date_fg]$right_separator_light %R $right_separator_light %d %b #[fg=$whoami_bg,bg=$time_date_bg,nobold]$right_separator_bold#[fg=$whoami_fg,bg=$whoami_bg,nobold] #(whoami) #[fg=$status_fg,nobold]$right_separator_bold#[fg=$host_fg,bg=$host_bg,bold] #h "
#       tmux set -g status-right-length 64 \; set -g status-right "$status_right"
#
#
#       # clock
#       clock_mode_colour=colour39  # light blue
#       tmux setw -g clock-mode-colour $clock_mode_colour
#       ;;
#   esac
# }
#
# circled_digit() {
#   circled_digits='⓪①②③④⑤⑥⑦⑧⑨⑩⑪⑫⑬⑭⑮⑯⑰⑱⑲⑳'
#   if [ $1 -lt 20 ] 2>/dev/null ; then
#     echo ${circled_digits:$1:1}
#   else
#     echo $1
#   fi
# }
#
# maximize_pane() {
#   __current_pane=$(tmux display -p '#D')
#  
#   __dead_panes=$(tmux list-panes -s -F '#{pane_dead} #{pane_id} #{pane_title}' | grep -o '^1 %.\+%.\+$' || true)
#   __restore=$(echo "${__dead_panes}" | sed -n -E -e "s/^1 ${__current_pane} \[\+\](%[0-9]+)$/tmux swap-pane -s \1 -t ${__current_pane} \; kill-pane -t ${__current_pane}/p" -e "s/^1 (%[0-9]+) \[\+\]${__current_pane}$/tmux swap-pane -s \1 -t ${__current_pane} \; kill-pane -t \1/p" )
#  
#   if [ x"${__restore}" = x ] ; then
#     [ x"$(tmux list-panes | wc -l | sed 's/^ *//g')" = x1 ] && tmux display "Can't maximize with only one pane" && return
#  
#     __window=$(tmux new-window -P "exec maximized+ 2> /dev/null | tmux setw remain-on-exit on && printf '\033]2;%s\033\\' [+]${__current_pane}")
#     __window=${__window%.*}
#
#     __guard=100
#     while ( [ x"$(tmux list-panes -t ${__window} -F '#S:#I #{pane_dead}')" != x"${__window} "1 ] && [ x"${__guard}" != x0 ] ) ; do sleep 0.01 ; _guard=$((__guard - 1)) ; done
#     if [ x"${__guard}" = 0 ] ; then
#       exit 1
#     fi
#
#     __new_pane=$(tmux display -p '#D')
#     tmux setw remain-on-exit off \; swap-pane -s "${__current_pane}" -t "${__new_pane}"
#   else
#     ${__restore}
#   fi
# }
#
# toggle_mouse() {
#   old=$(tmux show -g -w | grep mode-mouse | cut -d' ' -f2)
#   new=""
#
#   if [ "$old" = "on" ] ; then
#     new="off"
#   else
#     new="on"
#   fi
#
#   tmux set -g mode-mouse $new \;\
#        set -g mouse-resize-pane $new \;\
#        set -g mouse-select-pane $new \;\
#        set -g mouse-select-window $new \;\
#        display "mouse: $new"
# }
#
# $@