class Prawn::Table::Cell

def border_width=(width)


* a four-element array [top, right, bottom, left]
* a three-element array [top, horizontal, bottom]
* a two-element array [vertical, horizontal]
* an integer (sets all widths)

Sets border widths on this cell. The argument can be one of: 
def border_width=(width)
  @border_widths = case
  when width.nil?
    ["000000"] * 4
  when Numeric === width # all widths
    [width, width, width, width]
  when width.length == 2 # vert, horiz
    [width[0], width[1], width[0], width[1]]
  when width.length == 3 # top, horiz, bottom
    [width[0], width[1], width[2], width[1]]
  when width.length == 4 # top, right, bottom, left
    [width[0], width[1], width[2], width[3]]
  else
    raise ArgumentError, ":border_width must be a string " +
      "or an array [v,h] or [t,r,b,l]"
  end
end