anchor.diff:  
   Blockly.Ruby['<%= n %>'] = (block) ->
     pin = parseInt(@.getTitleValue('PIN'))
  -  "rgb_led(#{pin}).off"
  +  "rgb_led(#{pin}).off\n"
   
   # 「7セグディスプレイ」サブジャンル
   
  
positive.code:   red = parseInt(c[1..2], 16)
    green = parseInt(c[3..4], 16)
    blue = parseInt(c[5..6], 16)
    "rgb_led(#{pin}).on(red: #{red}, green: #{green}, blue: #{blue})"
  
  # RGB LED[▼ピン]をオフにする
  <% n = "#{category}_rgb_led_off" %>
  
negative.code: 
  Blockly.Ruby['<%= n %>'] = (block) ->
    pin = parseInt(@.getTitleValue('PIN'))
    "led(#{pin}).<%= method %>\n"
  <% end %>
  
  # 「RGB LED」サブジャンル
  