bug#17809: 24.4.50; Completions display

[Stefan Monnier]

>>> +       (if (functionp ,quit-function)
>>> +      (funcall ,quit-function ,window ,value)
>> Same for quit-function, and additionally, we want to make sure we
>> evaluate `quit-function' before `body'.
> `quit-function' is used in `dired-mark-pop-up' to activate the minibuffer,
> so it should be the final thing after displaying the *Marked Files* buffer.
> Maybe `quit-function' is not an appropriate name for such action?

I'm talking about the evaluation of quit-function, not the place
it's called.  `quit-function' is an expression that returns a function,
so it's important to know when that expression is run since it may end
up returning a different function if run at a different time.


        Stefan