Variable: redisplay-highlight-region-function

redisplay-highlight-region-function is a variable defined in simple.el.gz.

Value

#[128 "\300\301\302#\207"
      [apply cua--rectangle-highlight-for-redisplay
	     #[128 "\300\301\302#\207"
		   [apply rectangle--highlight-for-redisplay
			  #[1028 "\301
!\204!�\302\"!\210\303
\304#\210\303
\305\306#\210\303
\307\310#\210\207\311
!p=\2039�\312
!=\2039�\313
!=\204@�\314
p$\210\207"
				 [redisplay-unhighlight-region-function overlayp make-overlay overlay-put window face region priority
									(nil . 100)
									overlay-buffer overlay-start overlay-end move-overlay]
				 9 "\n\n(fn START END WINDOW ROL)"]
			  nil]
		   5 nil]
	     nil]
      5 nil]

Documentation

Function to move the region-highlight overlay.

This function is called with four parameters, START, END, WINDOW and OVERLAY. If OVERLAY is nil, a new overlay is created. In any case, the overlay is adjusted to reflect the other three parameters.

The overlay is returned by the function.

Source Code

;; Defined in /usr/src/emacs/lisp/simple.el.gz
(defvar redisplay-highlight-region-function
  (lambda (start end window rol)
    (if (not (overlayp rol))
        (let ((nrol (make-overlay start end)))
          (funcall redisplay-unhighlight-region-function rol)
          (overlay-put nrol 'window window)
          (overlay-put nrol 'face 'region)
          ;; Normal priority so that a large region doesn't hide all the
          ;; overlays within it, but high secondary priority so that if it
          ;; ends/starts in the middle of a small overlay, that small overlay
          ;; won't hide the region's boundaries.
          (overlay-put nrol 'priority '(nil . 100))
          nrol)
      (unless (and (eq (overlay-buffer rol) (current-buffer))
                   (eq (overlay-start rol) start)
                   (eq (overlay-end rol) end))
        (move-overlay rol start end (current-buffer)))
      rol))
  "Function to move the region-highlight overlay.
This function is called with four parameters, START, END, WINDOW
and OVERLAY.  If OVERLAY is nil, a new overlay is created.  In
any case, the overlay is adjusted to reflect the other three
parameters.

The overlay is returned by the function.")