# 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 -sg 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

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

set -g history-limit 5000                 # boost history

# edit configuration
bind e new-window -n '~/.tmux.conf' "sh -c '\${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'

# see https://github.com/ChrisJohnsen/tmux-MacOSX-pasteboard
if 'which -s reattach-to-user-namespace' 'set -g default-command "exec initializing... 2> /dev/null & reattach-to-user-namespace $SHELL -l"'


# -- 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
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 %%'

# 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"


# -- list choice ---------------------------------------------------------------

bind -t vi-choice h tree-collapse
bind -t vi-choice l tree-expand
run 'tmux bind -t vi-choice K start-of-list 2> /dev/null'
run 'tmux bind -t vi-choice J end-of-list 2> /dev/null'
bind -t vi-choice H tree-collapse-all
bind -t vi-choice L tree-expand-all
bind -t vi-choice Escape cancel


# -- edit mode -----------------------------------------------------------------

# the following vi-copy bindings match my vim settings
#   see https://github.com/gpakosz/.vim.git
bind -ct vi-edit H start-of-line
bind -ct vi-edit L end-of-line
bind -ct vi-edit q cancel
bind -ct vi-edit Escape cancel


# -- 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

# copy to Mac OSX pasteboard
if 'which -s reattach-to-user-namespace' 'bind y run "tmux save-buffer - | reattach-to-user-namespace pbcopy"'


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

if '[ -f ~/.tmux.conf.local ]' 'source ~/.tmux.conf.local'


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

run 'cut -c3- ~/.tmux.conf | sh -s apply_theme $tmux_conf_theme'
run 'cut -c3- ~/.tmux.conf | sh -s apply_configurable_bindings $tmux_conf_new_windows_retain_current_path $tmux_conf_new_panes_retain_current_path'
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
#
# apply_theme() {
#   case "$1" in
#     powerline_patched_font)
#       left_separator=''
#       left_separator_black=''
#       right_separator=''
#       right_separator_black=''
#       session_symbol=''
#       ;;
#     powerline)
#       left_separator='|'
#       left_separator_black=' '
#       right_separator='|'
#       right_separator_black=' '
#       ;;
#   esac
#
#   case "$1" in
#     powerline*)
#
#       # panes
#       pane_border_fg=colour238        # light gray
#       pane_active_border_fg=colour39  # light blue
#
#       tmux set -g pane-border-style fg=$pane_border_fg \; set -g pane-active-border-style fg=$pane_active_border_fg
#       #uncomment for fat borders
#       #tmux set -ga pane-border-style bg=$pane_border_fg \; set -ga pane-active-border-style 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 $display_panes_colour
#
#       # messages
#       message_fg=colour16           # black
#       message_bg=colour226          # yellow
#       message_attr=bold
#       tmux set -g message-style fg=$message_fg,bg=$message_bg,$message_attr
#
#       message_command_fg=colour16   # black
#       message_command_bg=colour160  # light yellow
#       tmux set -g message-command-style fg=$message_command_fg,bg=$message_command_bg,$message_attr
#
#       # windows mode
#       mode_fg=colour16   # black
#       mode_bg=colour226  # yellow
#       mode_attr=bold
#       tmux setw -g mode-style fg=$mode_fg,bg=$mode_bg,$mode_attr
#
#       # status line
#       status_fg=colour253 # white
#       status_bg=colour232 # dark gray
#       tmux set -g status-style fg=$status_fg,bg=$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]$left_separator_black"
#       if [ x"`tmux -q -L tmux_theme_status_left_test -f /dev/null new-session -d \; show -g -v status-left \; kill-session`" = x"[#S] " ] ; then
#         status_left="$status_left "
#       fi
#       tmux set -g status-left-length 32 \; set -g status-left "$status_left"
#
#       window_status_fg=colour245 # light gray
#       window_status_bg=colour232 # dark gray
#       window_status_format="#I #W"
#       tmux setw -g window-status-style fg=$window_status_fg,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]$left_separator_black#[fg=$window_status_current_fg,bg=$window_status_current_bg,bold] #I $left_separator #W #[fg=$window_status_current_bg,bg=$status_bg,nobold]$left_separator_black"
#       tmux setw -g window-status-current-format "$window_status_current_format"
#       tmux set -g status-justify left
#
#       window_status_activity_fg=default
#       window_status_activity_bg=default
#       window_status_activity_attr=underscore
#       tmux setw -g window-status-activity-style fg=$window_status_activity_fg,bg=$window_status_activity_bg,$window_status_activity_attr
#
#       window_status_bell_fg=colour226 # yellow
#       window_status_bell_bg=default
#       window_status_bell_attr=blink,bold
#       tmux setw -g window-status-bell-style fg=$window_status_bell_fg,bg=$window_status_bell_bg,$window_status_bell_attr
#
#       window_status_last_fg=colour39 # light blue
#       window_status_last_attr=default
#       tmux setw -g window-status-last-style $window_status_last_attr,fg=$window_status_last_fg
#
#       battery_full_fg=colour160   # red
#       battery_empty_fg=colour254  # white
#       battery_bg=colour160        # black
#       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="${tmux_conf_battery:-#(cut -c3- ~/.tmux.conf | sh -s battery ${tmux_conf_battery_symbol:-block} ${tmux_conf_battery_symbol_count:-auto} ${tmux_conf_battery_palette:-colour160,colour254,colour16} ${tmux_conf_battery_status})} #[fg=$time_date_fg,nobold]$right_separator %R $right_separator %d %b #[fg=$whoami_bg,bg=$time_date_bg,nobold]$right_separator_black#[fg=$whoami_fg,bg=$whoami_bg,nobold] #(whoami) $right_separator_black#[fg=$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 $1
#   fi
# }
#
# maximize_pane() {
#   tmux -q -L swap-pane-test -f /dev/null new-session -d \; new-window \; new-window \; swap-pane -t :1 \; kill-session || { tmux display 'your tmux version has a buggy swap-pane command - see ticket #108, fixed in upstream commit 78e783e'; exit; }
#   __current_pane=$(tmux display -p '#{pane_id}')
#
#   __dead_panes=$(tmux list-panes -s -F '#{pane_dead} #{pane_id} #{pane_start_command}' | grep -o '^1 %.\+maximized.\+$' || true)
#   __restore=$(echo "${__dead_panes}" | sed -n -E -e "s/^1 ${__current_pane} .+maximized.+(%[0-9]+)$/tmux swap-pane -s \1 -t ${__current_pane} \; kill-pane -t ${__current_pane}/p" -e "s/^1 (%[0-9]+) .+maximized.+${__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...& tmux setw remain-on-exit on; clear; tmux clear-history; printf 'Pane has been maximized, press <prefix>+ to restore. %s' \\${__current_pane};")
#     __window=${__window%.*}
#
#     __guard=50
#     while ( [ x"$(tmux list-panes -t ${__window} -F '#{session_name}:#{window_index} #{pane_dead}')" != x"${__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 '#{pane_id}')
#     tmux setw remain-on-exit off \; swap-pane -s "${__current_pane}" -t "${__new_pane}"
#   else
#     ${__restore} || tmux kill-pane
#   fi
# }
#
# toggle_mouse() {
#   old=$(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"
# }
#
# battery() {
#   battery_symbol=$1
#   battery_symbol_count=$2
#   battery_palette=$3
#   battery_status=$4
#   if [ x"$battery_symbol_count" = x"auto" ]; then
#     columns=$(tmux -q display -p '#{client_width}' 2> /dev/null || echo 80)
#     if [ $columns -ge 80 ]; then
#       battery_symbol_count=10
#     else
#       battery_symbol_count=5
#     fi
#   fi
#   battery_symbol_heart_full=♥
#   battery_symbol_heart_empty=♥
#   battery_symbol_block_full=◼
#   battery_symbol_block_empty=◻
#   eval battery_symbol_full='$battery_symbol_'"$battery_symbol"'_full'
#   eval battery_symbol_empty='$battery_symbol_'"$battery_symbol"'_empty'
#
#   uname_s=$(uname -s)
#   if [ x"$uname_s" = x"Darwin" ]; then
#     batt=$(pmset -g batt)
#     percentage=$(echo $batt |egrep -o [0-9]+%) || return
#     discharging=$(echo $batt | grep -qi "discharging" && echo "true" || echo "false")
#     charge="${percentage%%%} / 100"
#   elif [ x"$uname_s" = x"Linux" ]; then
#     batpath=/sys/class/power_supply/BAT0
#     if [ ! -d $batpath ]; then
#       batpath=/sys/class/power_supply/BAT1
#     fi
#     batfull=$batpath/energy_full
#     batnow=$batpath/energy_now
#     if [ ! -r $batfull -o ! -r $batnow ]; then
#       return
#     fi
#     discharging=$(grep -qi "discharging" $batpath/status && echo "true" || echo "false")
#     charge="$(cat $batnow) / $(cat $batfull)" || return
#   fi
#
#   if [ x"$battery_status"  = x"1" -o x"$battery_status" = x"true" ]; then
#     if [ x"$discharging" = x"true" ]; then
#       printf "%s " 🔋
#     else
#       printf "%s " ⚡
#     fi
#   fi
#
#   if echo $battery_palette | grep -q -E '^(colour[0-9]{1,3},?){3}$'; then
#     battery_full_fg=$(echo $battery_palette | cut -d, -f1)
#     battery_empty_fg=$(echo $battery_palette | cut -d, -f2)
#     battery_bg=$(echo $battery_palette | cut -d, -f3)
#
#     full=$(printf %.0f $(echo "$charge * $battery_symbol_count" | bc -l))
#     [ $full -gt 0 ] && \
#       printf '#[fg=%s,bg=%s]' $battery_full_fg $battery_bg && \
#       printf "%0.s$battery_symbol_full" $(seq 1 $full)
#     empty=$(($battery_symbol_count - $full))
#     [ $empty -gt 0 ] && \
#       printf '#[fg=%s,bg=%s]' $battery_empty_fg $battery_bg && \
#       printf "%0.s$battery_symbol_empty" $(seq 1 $empty)
#   elif echo $battery_palette | grep -q -E '^heat(,colour[0-9]{1,3})?$'; then
#     battery_bg=$(echo $battery_palette | cut -s -d, -f2)
#     battery_bg=${battery_bg:-colour16}
#     heat="233 234 235 237 239 241 243 245 247 144 143 142 184 214 208 202 196"
#     heat_count=$(echo $(echo $heat | wc -w))
#
#     eval set -- "$heat"
#     heat=$(eval echo $(eval echo $(printf "\\$\{\$(expr %s \* $heat_count / $battery_symbol_count)\} " $(seq 1 $battery_symbol_count))))
#
#     full=$(printf %.0f $(echo "$charge * $battery_symbol_count" | bc -l))
#     printf '#[bg=%s]' $battery_bg
#     [ $full -gt 0 ] && \
#       printf "#[fg=colour%s]$battery_symbol_full" $(echo $heat | cut -d' ' -f1-$full)
#     empty=$(($battery_symbol_count - $full))
#     if [ x"$battery_symbol" = x"heart" ]; then
#       [ $empty -gt 0 ] && \
#         printf '#[fg=%s]' $battery_bg && \
#         printf "%0.s$battery_symbol_empty" $(seq 1 $empty)
#     else
#       [ $empty -gt 0 ] && \
#         printf "#[fg=colour%s]$battery_symbol_empty" $(echo $heat | cut -d' ' -f$((full+1))-$(($full + $empty)))
#     fi
#   fi
# }
#
# apply_configurable_bindings() {
#   windows_retain_current_path=${1:-false}
#   if [ x"$windows_retain_current_path" = x"true" -o x"$windows_retain_current_path" = x"1" ] ; then
#     tmux bind c new-window -c '#{pane_current_path}'
#   else
#     tmux bind c new-window
#   fi
#
#   panes_retain_current_path=${2:-true}
#   if [ x"$panes_retain_current_path" = x"true" -o x"$panes_retain_current_path" = x"1" ] ; then
#     tmux  bind '"' split-window -h -c "#{pane_current_path}"  \;\
#           bind _ split-window -h -c "#{pane_current_path}"    \;\
#           bind % split-window -v -c "#{pane_current_path}"    \;\
#           bind - split-window -v -c "#{pane_current_path}"
#   else
#     tmux  bind '"' split-window -h  \;\
#           bind _ split-window -h    \;\
#           bind % split-window -v    \;\
#           bind - split-window -v
#   fi
# }
#
# $@