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

[Eli Zaretskii]

> Cc: 23341@debbugs.gnu.org
> From: Clément Pit--Claudel <clement.pitclaudel@live.com>
> Date: Sun, 24 Apr 2016 10:43:18 -0400
> 
> > I understand, thanks.  But to me, such a global value makes very
> > little sense, because tooltips can be used for many different features
> > that don't necessary display short helpful text.  Having a single
> > value for all the possible use cases is IMO not a good customization
> > design, as it can never be a "one fits all" value anyway.
> 
> In that case, I don't understand why we have tooltip-hide-delay as a 
> customizable variable

We have it to provide customization for tooltip.el functions.

> nor why the hide delay is an optional argument to x-show-tip.

Because x-show-tip has a fallback, whose value is reasonable in many
situations.