def_inspector

# File lib/irb/inspector.rb, line 46
  def INSPECTORS.def_inspector(key, arg=nil, &block)
#     if !block_given?
#       case arg
#       when nil, Proc
#       inspector = IRB::Inspector(init_p)
#       when Inspector
#       inspector = init_p
#       else
#       IRB.Raise IllegalParameter, init_p
#       end
#       init_p = nil
#     else
#       inspector = IRB::Inspector(block, init_p)
#     end

    if block_given?
      inspector = IRB::Inspector(block, arg)
    else
      inspector = arg
    end

    case key
    when Array
      for k in key
        def_inspector(k, inspector)
      end
    when Symbol
      self[key] = inspector
      self[key.to_s] = inspector
    when String
      self[key] = inspector
      self[key.intern] = inspector
    else
      self[key] = inspector
    end
  end