# File lib/pry/commands/watch_expression.rb, line 30
    def options(opt)
      opt.on :d, :delete,
        "Delete the watch expression with the given index. If no index is given; clear all watch expressions.",
        :optional_argument => true, :as => Integer
      opt.on :l, :list,
        "Show all current watch expressions and their values.  Calling watch with no expressions or options will also show the watch expressions."
    end