bug#28814: [BUMP, PATCH] (26.0.90; When *xref* window is needed, original window-switching intent is lost )

[martin rudalics]

> This change generalizes that: it disregards the threshold if the
> window to be split is the frame's only _usable_ window (it is either
> the only one, as before, or all the other windows are dedicated to
> some buffer and thus cannot be touched).

"all the other windows" should become "all other windows on this frame"

And please add this to the appropriate place (section 28.15 Additional
Options for Displaying Buffers) of the Elisp manual.

Thanks, martin