Variable: cua-virtual-rectangle-edges
cua-virtual-rectangle-edges is a customizable variable defined in
cua-base.el.gz.
Value
t
Documentation
If non-nil, rectangles have virtual straight edges.
Note that although rectangles are always DISPLAYED with straight edges, the buffer is NOT modified, until you execute a command that actually modifies it. M-p toggles this feature when a rectangle is active.
Source Code
;; Defined in /usr/src/emacs/lisp/emulation/cua-base.el.gz
;;; Rectangle Customization
(defcustom cua-virtual-rectangle-edges t
"If non-nil, rectangles have virtual straight edges.
Note that although rectangles are always DISPLAYED with straight edges, the
buffer is NOT modified, until you execute a command that actually modifies it.
M-p toggles this feature when a rectangle is active."
:type 'boolean)