Variable: mouse-select-region-move-to-beginning
mouse-select-region-move-to-beginning is a customizable variable
defined in mouse.el.gz.
Value
nil
Documentation
Effect of selecting a region extending backward from double click.
Nil means keep point at the position clicked (region end); non-nil means move point to beginning of region.
This variable was added, or its default value changed, in Emacs 26.1.
Probably introduced at or before Emacs version 26.1.
Source Code
;; Defined in /usr/src/emacs/lisp/mouse.el.gz
(defcustom mouse-select-region-move-to-beginning nil
"Effect of selecting a region extending backward from double click.
Nil means keep point at the position clicked (region end);
non-nil means move point to beginning of region."
:type '(choice (const :tag "Don't move point" nil)
(const :tag "Move point to beginning of region" t))
:version "26.1")