bug#73431: Add `setf` support for `stream.el` in ELPA

[Michael Heerdegen via "Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Eli Zaretskii <eliz@gnu.org> writes:

> The rule that the first line should be a complete sentence (actually,
> a summary) is for the benefit of the apropos commands, which show only
> the first line of each doc string.  So the answer to your question
> depends on whether these methods can wind up in output of apropos
> commands, and what happens if and when they do.

Thanks.

At the first glance this doesn't seem the case.  We do have this FIXME
in "apropos.el" though:

;; FIXME: Print information about each individual method: both
;; its docstring and specializers (bug#21422).

So I guess we want to follow the rule here.  But then - how to provide
the nice example here, without repeating the first sentence of the
generic.  Any idea?


Thanks,

Michael.