redisplay-unhighlight-region-function
redisplay-unhighlight-region-function is a variable defined in `simple.el
'.
Its value is #[128 "\300\301\302#\207" [apply rectangle--unhighlight-for-redisplay #[257 "\300!\205 \301!\207" [overlayp delete-overlay] 3 "\n\n(fn ROL)"] nil] 5 nil]
- This variable may be risky if used as a file-local variable.