added the #{pretty_pane_current_path} variable

.tmux.conf

@@ -204,7 +204,14 @@ run 'cut -c3- "$TMUX_CONF" | sh -s _apply_configuration'
 # _tmux_version=$(tmux -V | perl -n -e '($l, $r) = $_ =~ /^[^0-9]+([0-9.]+)([a-z])?(-rc.*)?$/; print $l * 1000 + ($r eq "" ? 0 : ord($r) - 96)')
 #
 # _is_true() {
-#   [ "$1" = "true" ] || [ "$1" = "yes" ] || [ "$1" = "1" ]
+#   case "$1" in
+#     true|yes|1)
+#       return 0
+#       ;;
+#     *)
+#       return 1
+#       ;;
+#   esac
 # }
 #
 # _is_enabled() {
@@ -230,6 +237,14 @@ run 'cut -c3- "$TMUX_CONF" | sh -s _apply_configuration'
 #   printf '%s' "$*" | perl -CS -pe 's/(\\u([0-9A-Fa-f]{1,4})|\\U([0-9A-Fa-f]{1,8}))/chr(hex($2.$3))/eg' 2>/dev/null
 # }
 #
+# _pretty_path() {
+#   max_length=${1:-auto}; shift
+#   if [ "$max_length" = "auto" ]; then
+#     max_length=$(($(tmux -q display -p '#{client_width}') / 4))
+#   fi
+#   { cd "$*" && pwd || printf '%s' "$*";  } | perl -s -p -E 's|^$HOME|~|; /^.{0,$max_length}$/ || s|(~?\/[^/]+)(/[^/]+)(?:/.+)(/[^/]+)$|$1$2/...$3|g' -- -HOME="$HOME" -max_length="$max_length"
+# }
+#
 # if command -v pkill > /dev/null 2>&1; then
 #   _pkillf() {
 #     pkill -f "$@" || true
@@ -1388,6 +1403,7 @@ run 'cut -c3- "$TMUX_CONF" | sh -s _apply_configuration'
 #   set_titles_string=$(printf '%s' "${tmux_conf_theme_terminal_title:-$(tmux show -gv set-titles-string)}" | sed \
 #     -e "s%#{circled_window_index}%#(cut -c3- '$TMUX_CONF' | sh -s _circled '#I')%g" \
 #     -e "s%#{circled_session_name}%#(cut -c3- '$TMUX_CONF' | sh -s _circled '#S')%g" \
+#     -e "s%#{pretty_pane_current_path}%#(cut -c3- '$TMUX_CONF' | sh -s _pretty_path auto '#{pane_current_path}')%g" \
 #     -e "s%#{username}%#(cut -c3- '$TMUX_CONF' | sh -s _username '#{pane_pid}' '#{b:pane_tty}' false '#D')%g" \
 #     -e "s%#{hostname}%#(cut -c3- '$TMUX_CONF' | sh -s _hostname '#{pane_pid}' '#{b:pane_tty}' false false '#h' '#D')%g" \
 #     -e "s%#{hostname_full}%#(cut -c3- '$TMUX_CONF' | sh -s _hostname '#{pane_pid}' '#{b:pane_tty}' false true '#H' '#D')%g" \
@@ -1398,6 +1414,7 @@ run 'cut -c3- "$TMUX_CONF" | sh -s _apply_configuration'
 #   window_status_format=$(printf '%s' "${window_status_format:-$(tmux show -gv window-status-format)}" | sed \
 #     -e "s%#{circled_window_index}%#(cut -c3- '$TMUX_CONF' | sh -s _circled '#I')%g" \
 #     -e "s%#{circled_session_name}%#(cut -c3- '$TMUX_CONF' | sh -s _circled '#S')%g" \
+#     -e "s%#{pretty_pane_current_path}%#(cut -c3- '$TMUX_CONF' | sh -s _pretty_path auto '#{pane_current_path}')%g" \
 #     -e "s%#{username}%#(cut -c3- '$TMUX_CONF' | sh -s _username '#{pane_pid}' '#{b:pane_tty}' false '#D')%g" \
 #     -e "s%#{hostname}%#(cut -c3- '$TMUX_CONF' | sh -s _hostname '#{pane_pid}' '#{b:pane_tty}' false false '#h' '#D')%g" \
 #     -e "s%#{hostname_full}%#(cut -c3- '$TMUX_CONF' | sh -s _hostname '#{pane_pid}' '#{b:pane_tty}' false true '#H' '#D')%g" \
@@ -1408,6 +1425,7 @@ run 'cut -c3- "$TMUX_CONF" | sh -s _apply_configuration'
 #   window_status_current_format=$(printf '%s' "${window_status_current_format:-$(tmux show -gv window-status-current-format)}" | sed \
 #     -e "s%#{circled_window_index}%#(cut -c3- '$TMUX_CONF' | sh -s _circled '#I')%g" \
 #     -e "s%#{circled_session_name}%#(cut -c3- '$TMUX_CONF' | sh -s _circled '#S')%g" \
+#     -e "s%#{pretty_pane_current_path}%#(cut -c3- '$TMUX_CONF' | sh -s _pretty_path auto '#{pane_current_path}')%g" \
 #     -e "s%#{username}%#(cut -c3- '$TMUX_CONF' | sh -s _username '#{pane_pid}' '#{b:pane_tty}' false '#D')%g" \
 #     -e "s%#{hostname}%#(cut -c3- '$TMUX_CONF' | sh -s _hostname '#{pane_pid}' '#{b:pane_tty}' false false '#h' '#D')%g" \
 #     -e "s%#{hostname_full}%#(cut -c3- '$TMUX_CONF' | sh -s _hostname '#{pane_pid}' '#{b:pane_tty}' false true '#H' '#D')%g" \
@@ -1421,6 +1439,7 @@ run 'cut -c3- "$TMUX_CONF" | sh -s _apply_configuration'
 #     -e "s/#{mouse}/#{?mouse,$tmux_conf_theme_mouse ,$(printf '%s' "$tmux_conf_theme_mouse" | sed -e 's/./ /g') }/g" \
 #     -e "s%#{synchronized}%#{?pane_synchronized,$tmux_conf_theme_synchronized ,}%g" \
 #     -e "s%#{circled_session_name}%#(cut -c3- '$TMUX_CONF' | sh -s _circled '#S')%g" \
+#     -e "s%#{pretty_pane_current_path}%#(cut -c3- '$TMUX_CONF' | sh -s _pretty_path auto '#{pane_current_path}')%g" \
 #     -e "s%#{root}%#{?#{==:#(cut -c3- '$TMUX_CONF' | sh -s _username '#{pane_pid}' '#{b:pane_tty}' '#D'),root},$tmux_conf_theme_root,}%g")
 #
 #   status_right=$(printf '%s' "${status_right-$(tmux show -gv status-right)}" | sed \
@@ -1429,6 +1448,7 @@ run 'cut -c3- "$TMUX_CONF" | sh -s _apply_configuration'
 #     -e "s/#{mouse}/#{?mouse,$tmux_conf_theme_mouse ,$(printf '%s' "$tmux_conf_theme_mouse" | sed -e 's/./ /g') }/g" \
 #     -e "s%#{synchronized}%#{?pane_synchronized,$tmux_conf_theme_synchronized ,}%g" \
 #     -e "s%#{circled_session_name}%#(cut -c3- '$TMUX_CONF' | sh -s _circled '#S')%g" \
+#     -e "s%#{pretty_pane_current_path}%#(cut -c3- '$TMUX_CONF' | sh -s _pretty_path auto '#{pane_current_path}')%g" \
 #     -e "s%#{root}%#{?#{==:#(cut -c3- '$TMUX_CONF' | sh -s _username '#{pane_pid}' '#{b:pane_tty}' '#D'),root},$tmux_conf_theme_root,}%g")
 #
 #   tmux_conf_battery_bar_symbol_full=$(_decode_unicode_escapes "${tmux_conf_battery_bar_symbol_full:-◼}")

.tmux.conf.local

@@ -268,6 +268,7 @@ tmux_conf_theme_right_separator_sub="|"
 #     - #{username}
 #     - #{username_ssh}
 tmux_conf_theme_status_left=" ❐ #S | ↑#{?uptime_y, #{uptime_y}y,}#{?uptime_d, #{uptime_d}d,}#{?uptime_h, #{uptime_h}h,}#{?uptime_m, #{uptime_m}m,} "
+#tmux_conf_theme_status_left=" ❐ #S | ↑#{?uptime_y, #{uptime_y}y,}#{?uptime_d, #{uptime_d}d,}#{?uptime_h, #{uptime_h}h,}#{?uptime_m, #{uptime_m}m,} | #{pretty_pane_current_path} "
 tmux_conf_theme_status_right=" #{prefix}#{mouse}#{pairing}#{synchronized}#{?battery_status,#{battery_status},}#{?battery_bar, #{battery_bar},}#{?battery_percentage, #{battery_percentage},} , %R , %d %b | #{username}#{root} | #{hostname} "
 
 # status left style

README.md

@@ -277,6 +277,8 @@ This configuration supports the following builtin variables:
    connected to a remote server through SSH/Mosh
  - `#{loadavg}`: load average
  - `#{pairing}`: is session attached to more than one client?
+ - `#{pretty_pane_current_path}`: prettified `#{pane_current_path}` when its
+   length is too long
  - `#{prefix}`: is prefix being depressed?
  - `#{root}`: is current user root?
  - `#{synchronized}`: are the panes synchronized?