RE: `y-or-n-p' does not wait for input - assumes `n'

[Drew Adams]

    > Since generation of switch-frame and select-window
    > events is not limited to inside an unusual construct such as
    > track-mouse, I would expect them to happen often if they happen at
    > all.  But people don't seem to be complaining about such problems.

    Probably because those events are much less common

FWIW, I have been bothered by switch-frame events when trying to debug some
of my code that reads events. Because the debug buffer is in a separate
frame (I use non-nil pop-up-frames), just getting to the debug buffer causes
a switch-frame event, which can sometimes throw things off. In such cases, I
usually resort to using good-ole debug messages.