(define-key cua--rectangle-keymap [remap set-mark-command] 'cua-toggle-rectangle-mark)
(define-key cua--rectangle-keymap [remap forward-char] 'cua-resize-rectangle-right)
+ (define-key cua--rectangle-keymap [remap right-char] 'cua-resize-rectangle-right)
(define-key cua--rectangle-keymap [remap backward-char] 'cua-resize-rectangle-left)
+ (define-key cua--rectangle-keymap [remap left-char] 'cua-resize-rectangle-left)
(define-key cua--rectangle-keymap [remap next-line] 'cua-resize-rectangle-down)
(define-key cua--rectangle-keymap [remap previous-line] 'cua-resize-rectangle-up)
(define-key cua--rectangle-keymap [remap end-of-line] 'cua-resize-rectangle-eol)