Re: tooltip can be displayed outside the screen

[Richard M. Stallman]

    Since I am not the author of the last sentence, I don't know what it was
    intended to warn against.  I tried to use a bad value on X, and the
    resulted effect is the mouse pointer covering part of the tooltip window.
    Also moving the mouse causes flickering of the tooltip window.  I have no
    idea how to describe this behavior in the doc string.

Could you change that to say "or it may interfere with clicking where
you wish".

    BTW, on non-toolkit X builds using tooltips on menu items completely
    garbles them.

I don't understand.  Could you please say more specifically
how they get garbled?

    Most likely this is caused by garbage collection, and
    displaying tooltips makes GC to occur sooner than when tooltips are
    disabled.

I don't follow the connection.  What does GC have to do with garbling
tooltips?

Are you using a mode in which the tooltip appears in the echo area?