RE: mode-line tooltips for "[" and "]" in recursive-edit

[Drew Adams]

> >> But the main thing is to avoid minibuffer expansion and shrinkage.
> >
> > Why is that the main thing? Why is that even a goal?
> 
> Because some people don't like it or because it sometimes 
> can't be done.

If it can't be done, then it can't be done. Can't argue with that.

But it doesn't seem right for the only echo-area display of tooltip help to
truncate it at the frame width. Joining the lines is not a problem, but losing
some of the info could be.

Make such truncation an option, if you want, and even make it the default way of
displaying a tooltip in the echo area, if you want. But there should be some way
for users to see the complete tooltip text in the echo area.