compass_patch.rb

# config/initializers/compass_patch.rb

module Compass::SassExtensions::Functions::Sprites
  # Returns boolean if sprite has the selector
  def sprite_has_selector(map, sprite, selector)
    sprite = convert_sprite_name(sprite)
    verify_map map
    verify_sprite sprite
    unless VALID_SELECTORS.include?(selector.value)
      raise Sass::SyntaxError, "Invalid Selctor did you mean one of: #{VALID_SELECTORS.join(', ')}"
    end
    Sass::Script::Bool.new map.send(:"has_#{selector.value}?", sprite.value)
  end
end