Re: New pp

[Stefan Monnier]

>> Hmm... but if we use such a pseudo-stream here, doesn't it break all
>> calls to `princ' within other cl-print-object methods (i.e. forcing us
>> the override pretty much all existing cl-print-object methods with
>> a pprint-specific one)?
> It doesn't break anything, AFAIK, it just means that you don't get
> control over newlines vs spaces.

But from my reading of the code, we may sometimes end up calling `princ'
with a pp-state object, and I expect it won't know what to do with it.

> Oh wait, did you possibly miss a close paren? Might be clearer this way:
> (cl-defmethod cl-print-object (object (pprint-state (head :pprint)))
>   (pp--scan (cl-prin1-to-string object)
>             (cdr pprint-state))
>   object)

No, the problem is when we run for example the

    (cl-defmethod cl-print-object ((object vector) stream)

method (which AFAIK takes precedence over the

   (cl-defmethod cl-print-object (object (pprint-state (head :pprint)))

method, so it will receive a pp-state stream and pass it on to `princ`).


        Stefan