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-rw-r--r--lisp/mouse.el5
1 files changed, 5 insertions, 0 deletions
diff --git a/lisp/mouse.el b/lisp/mouse.el
index 27b32e9f6f6..5577b94d01a 100644
--- a/lisp/mouse.el
+++ b/lisp/mouse.el
@@ -1013,6 +1013,11 @@ should only be used by mouse-drag-region."
(overlay-start mouse-drag-overlay))
region-termination))
last-command this-command)
+ (when (eq transient-mark-mode 'identity)
+ ;; Reset `transient-mark-mode' to avoid expanding the region
+ ;; while scrolling (compare thread on "Erroneous selection
+ ;; extension ..." on bug-gnu-emacs from 2007-06-10).
+ (setq transient-mark-mode nil))
(push-mark region-commencement t t)
(goto-char region-termination)
(if (not do-mouse-drag-region-post-process)