Suppose that I have this function, that inserts some stuff into the minibuffer:
(defun foobar ()
(interactive)
(minibuffer-with-setup-hook
(lambda ()
(let ((resize-mini-windows t))
(save-excursion
(insert "foo\nbar")
(fit-window-to-buffer))))
(read-from-minibuffer "string: ")))
(global-set-key (kbd "M-RET") 'foobar)
It works fine if I call it from any buffer, except when I'm already in the minibuffer.
For example, if I eval (read-from-minibuffer "test: "), and then press M-RET, my minibuffer becomes string: foo (note the 1 line height). After I press any character, I see that bar is also in the minibuffer. The problem is that the minibuffer height won't update until I press any character.
Why does this happen and how to get around it?
