bug#23341: x-show-tip does not respect the value of tooltip-hide-delay, and the default tooltip timeout isn't configurable

[Drew Adams]

> > `tooltip-show' doesn't let you do what `x-show-tip'
> > does.  That's what this discussion is about (IMHO).
> 
> And what exactly doesn't `tooltip-show' let you do, 
> that `x-show-tip'can?

Everything that's not determined by the specific
call that `tooltip-show' makes of `x-show-tip'.

Obviously.

That's a very specific, narrow call - it nails
down almost everything that `x-show-tip' takes
as an argument.

;; After getting the frame parameters from
;; `tooltip-frame-parameters', and perhaps
;; updating the foreground and background from
;; those of face `tooltip':
;;
(x-show-tip (propertize text 'face 'tooltip)
                 (selected-frame)
                 **THOSE-TOOLTIP-PARAMETERS**
                 tooltip-hide-delay
                 tooltip-x-offset
                 tooltip-y-offset))

IOW, the only possible input to the whole deal,
affecting the appearance, is TEXT.  All the
rest is baked in. 

Now, you can say that code could always bind
all of those `tooltip-*' thingies around a call
to `tooltip-show'.  Sure, it could.  It could
end up redefining, in effect, `x-tooltip-show'.

I'd say it makes more sense to (also) let users
use the more general, more versatile function
itself, `x-show-tip' - just as `tooltip-show' does.

What's good for the goose is good for the gander.