function absolutize(path)
  if is_relative_path(path) then
    return love.filesystem.getWorkingDirectory()..'/'..path  -- '/' should work even on Windows
  end
  return path
end
function run.mouse_press(x,y, mouse_button)
    filename=absolutize(Editor_state.filename),
    screen_top=Editor_state.screen_top1, cursor=Editor_state.cursor1
  }
end
  if #arg > 0 and Editor_state.filename ~= absolutize(arg[1]) then
    Editor_state.filename = arg[1]
    load_from_disk(Editor_state)
    Text.redraw_all(Editor_state)
    Editor_state.screen_top1 = {line=1, pos=1}
    Editor_state.cursor1 = {line=1, pos=1}
  else
    load_from_disk(Editor_state)
    Text.redraw_all(Editor_state)
  end

  - from previous session
    - Filename as absolute path
    - Filename as relative path
  - from defaults
  - run with a filename on commandline, scroll around, quit; restart without a filename; window opens running the text editor in same position+dimensions
  - run with a filename on commandline, scroll around, quit; restart with same filename; window opens running the text editor in same position+dimensions

  - run with a filename on commandline, scroll around, quit; restart with new filename; window opens new filename with cursor up top

  - delete app settings, start with a filename; window opens with cursor at top of file
  - run with absolute file path; quit; restart; window opens in same position+dimensions
  - run with relative file path; quit; switch to new directory; restart without a filename; window opens running the same file in same position+dimensions
  - run with a filename on commandline, scroll around, quit; restart without a filename; window opens in same position+dimensions
  - run with a filename on commandline, scroll around, quit; restart with same filename; window opens in same position+dimensions

  - run editor, scroll around, move cursor to end of some line, quit; restart with new filename; window opens running the text editor in same position+dimensions

  - run editor, scroll around, move cursor to end of some line, quit; restart with new filename; window opens in same position+dimensions