\\`SPC' to try the command just this once, but leave it disabled.
\\`!' to enable it and all the disabled commands for this session.")))
(char
+ ;; Note: the prompt produced from the choices below must not
+ ;; overflow a single screen line, because otherwise it will
+ ;; cause the mini-window to resize, which will in turn hide
+ ;; the last line of the help text above: the code which fits
+ ;; the window to the size of the help text does not expect
+ ;; the mini-window to become taller.
(car (read-multiple-choice "Use this command?"
'((?n "no")
(?y "yes")