Bug#189207: Reverse scrolling (RISC OS style)

[Tony Houghton]

Years ago I filed a similar wishlist against GTK 1 and I think I even
submitted a patch. It was rejected, but they said they would consider it
if I used a keyboard modifier instead of an alternative button, but I
never got around to rewriting my patch.
<https://bugzilla.gnome.org/show_bug.cgi?id=67649> also hints that using
a modifier to reverse direction might be accepted.

I've posted my comment here instead of upstream, because I've been told
it's useless to post comments to closed bugs.