bug#54285: 29.0.50; Scrolling the calc help buffer

[Lars Ingebrigtsen]

Rudolf Adamkovič <salutis@me.com> writes:

> The user starts reading help and as they reach the end of the visible
> part of the buffer, they scroll the window *with the scroll bar*.
>
> Expected: the window scrolls, the user continues reading
> Actual: Emacs beeps, closes the window, and tells the user:
>
> "Wrong type argument: stringp, nil"

calc-dispatch-help is basically just looping over `read-event' and
responding only to the keyboard scroll keys.  Perhaps a better way to
implement this would be to use the normal help functions (which are less
modal) so that these things work better?


-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no