bug#37888: 27.0.50; Streams and errors in element generation

[Michael Heerdegen <michael_heerdegen@web.de>]

Noam Postavsky <npostavs@gmail.com> writes:

> > Would something like this make sense (Noam)?
>
> >     ((eq (car-safe stream) stream--fresh-identifier)
> > -    (setf (car stream) stream--evald-identifier)
> > -    (setf (cdr stream) (funcall (cdr stream))))
> > +    (prog1 (setf (cdr stream) (funcall (cdr stream)))
> > +      (setf (car stream) stream--evald-identifier)))
>
> Right, only mark the stream element as evaluated after we (successfully!)
> evaluate it.  Makes sense to me.

Installed.

@Nicolas: Would you mind when I also bump the version of stream to 2.2.5
and update the copyright years of the files in the stream package?

TIA,

Michael.