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Re: Selecting tooltip frames considered harmful

From: Stefan Monnier
Subject: Re: Selecting tooltip frames considered harmful
Date: Mon, 26 Feb 2018 08:21:35 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

> So you probably mean the mini window for the frame of the window
> selected at the time the tooltip frame is created.


> That window is in fact the mini window of tip_last_frame.

Maybe the lifetime of a tooltip frame is sufficiently restricted that
this is the case  (I'm not sufficiently familiar with that code to
tell), but the *semantics* should be "the echo area of the window for
which the tooltip frame is transient", I think (and if tip_last_frame
gives us that, then that can be used in the implementation).

> We currently refuse to delete a frame when its minibuffer window
> serves as the minibuffer window of another frame.

I think this is an accident of implementation, not a feature.
As a user I've found it annoying on a bunch of occasions.
So we don't have to reproduce that misfeature here.

A more useful behavior would be to allow deleting that frame, and then
next time the other frame needs a miniwindow, you just go "oops, our
miniwindow has been deleted, let's look for another one".

We could still have a check when deleting a frame to make sure there
remains at least 1 miniwindow somewhere, of course.


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