Re: master 5743b74d4b 1/2: Improve mouse dragging

[Po Lu]

Eli Zaretskii <eliz@gnu.org> writes:

>   . why the code you copied from tooltip.el to mouse.el doesn't call
>     add-face-text-property like tooltip does?

Because that's the problem: that code was added in Emacs 28, and it adds
text properties to the tooltip text that interferes with
`mouse-drag-and-drop-region', causing a regression from Emacs 27 that
was fixed in an earlier change.  (Which indirectly led to the bug that
this change fixes.)