text: """Format variables for tmux objects.
  
  libtmux.formats
  ~~~~~~~~~~~~~~~
  
  For reference: https://github.com/tmux/tmux/blob/master/format.c
  
  """
  import os
  
  FORMAT_SEPARATOR = os.environ.get("LIBTMUX_TMUX_FORMAT_SEPARATOR", "|")
  
  SESSION_FORMATS = [
      "session_name",
      "session_windows",
      "session_width",
      "session_height",
      "session_id",
      "session_created",
      "session_created_string",
      "session_attached",
      "session_grouped",
      "session_group",
  ]
  
  CLIENT_FORMATS = [
      "client_cwd",
      "client_height",
      "client_width",
      "client_tty",
      "client_termname",
      "client_created",
      "client_created_string",
      "client_activity",
      "client_activity_string",
      "client_prefix",
      "client_utf8",
      "client_readonly",
      "client_session",
      "client_last_session",
  ]
  
  WINDOW_FORMATS = [
      # format_window()
      "window_id",
      "window_name",
      "window_width",
      "window_height",
      "window_layout",
      "window_panes",
      # format_winlink()
      "window_index",
      "window_flags",
      "window_active",
      "window_bell_flag",
      "window_activity_flag",
      "window_silence_flag",
  ]
  
  PANE_FORMATS = [
      "history_size",
      "history_limit",
      "history_bytes",
      "pane_index",
      "pane_width",
      "pane_height",
      "pane_title",
      "pane_id",
      "pane_active",
      "pane_dead",
      "pane_in_mode",
      "pane_synchronized",
      "pane_tty",
      "pane_pid",
      "pane_start_command",
      "pane_start_path",
      "pane_current_path",
      "pane_current_command",
      "cursor_x",
      "cursor_y",
      "scroll_region_upper",
      "scroll_region_lower",
      "saved_cursor_x",
      "saved_cursor_y",
      "alternate_on",
      "alternate_saved_x",
      "alternate_saved_y",
      "cursor_flag",
      "insert_flag",
      "keypad_cursor_flag",
      "keypad_flag",
      "wrap_flag",
      "mouse_standard_flag",
      "mouse_button_flag",
      "mouse_any_flag",
      "mouse_utf8_flag",
  ]
  