code: def join_wrapped_lines(lines):
      
      if len(lines) == 1:
          return lines[0]
  
      joined = lines[0]
      for line in lines[1:]:
          if joined and joined[-1] in STRIP_SPACE_CHARS:
              joined += line
          else:
              joined += ' '
              joined += line
  
      return joined
docs: Join one or multiple lines that wrapped. Returns the reconstructed line.
      Takes into account proper spacing between the lines (see
      STRIP_SPACE_CHARS).