Re: doc for temp-buffer-max-height and resize-temp-buffer-window

[Richard Stallman]

    That seems like a lot of trouble. The mode doc says not to turn the
    mode on by binding the mode variable, so that is presumably not an
    option. It would be a lot simpler (and cleaner) if you could just bind
    a variable or two, wouldn't it? For instance, make such a binding
    around with-output-to-temp-buffer, so that it automatically resized
    the buffer's window.

You can bind temp-buffer-show-hook.