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Fix region display while dragging mouse

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* lisp/mouse.el (mouse-drag-track): Reset deactivate-mark in the
buffer of the drag event, to allow mark to be set and the region
be shown as we drag the mouse.  (Bug#24030)

This was backported from master
(cherry picked from commit 7d58b02f36)
This commit is contained in:
Eli Zaretskii 2016-07-30 11:32:02 +03:00
parent df4f812534
commit f746a92c3c
1 changed files with 5 additions and 3 deletions
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8
lisp/mouse.el
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@ -808,14 +808,16 @@ The region will be defined with mark and point."
(setq mouse-selection-click-count-buffer (current-buffer))
(deactivate-mark)
(let* ((scroll-margin 0) ; Avoid margin scrolling (Bug#9541).
(start-posn (event-start start-event))
(start-point (posn-point start-posn))
(start-window (posn-window start-posn))
(_ (with-current-buffer (window-buffer start-window)
(setq deactivate-mark nil)))
;; We've recorded what we needed from the current buffer and
;; window, now let's jump to the place of the event, where things
;; are happening.
(_ (mouse-set-point start-event))
(echo-keystrokes 0)
(start-posn (event-start start-event))
(start-point (posn-point start-posn))
(start-window (posn-window start-posn))
(bounds (window-edges start-window))
(make-cursor-line-fully-visible nil)
(top (nth 1 bounds))