Re: 1. No doc for `help-mode-setup'. 2. Why do temp-buffer*-hook use help-mode?

[Richard Stallman]

    > help-mode stuff by default? Is that correct? Why does Emacs assume
    > that with-output-to-temp-buffer is dealing with a help buffer? The doc
    > for with-output-to-temp-buffer says nothing about help-mode or a help
    > buffer - it seems to advertise the special form as being completely
    > general.

I did this because it turns out to be useful.
If a specific caller wants some other mode, it's easy to switch.
So this causes no problem.

      Most likely the best way to make it
    cleaner is to start by renaming with-output-to-temp-buffer: the buffer isn't
    temporary (at least not in the usual sense, as in with-temp-buffer).

There is no need for that incompatibility, and I don't want it.
There isn't a problem here.  Please let's work on improvements
that will really make Emacs better, not on this area.
etc/TODO lists so many things that need to be done.