docs: def multirow_str_vector(f, n, r=0):
      """
      Assembles a vector that spans several rows in a text file.
  
      Arguments:
        f -- file-like object
        n -- number of values expected
        r (optional) -- Index of last row read in file (to tell which file row in
                        case of error)
  
      Returns:
        (list-of-strings, number-of-rows-read-from-file)
      """
  
      so_far = 0
      n_rows = 0
      v = []
      while True:
          temp = str_vector(f)
          n_rows += 1
          n_now = len(temp)
  
          if n_now+so_far > n:
              a99.get_python_logger().warning(('Reading multi-row vector: '
                  'row %d should have %d values (has %d)') %
                  (r+n_rows, n-so_far, n_now))
  
              v.extend(temp[:n-so_far])
              so_far = n
  
          elif n_now+so_far <= n:
              so_far += n_now
              v.extend(temp)
  
          if so_far == n:
              break
  
      return v, n_rows