with an assignment operator, which implies modifying the value itself.
Perhaps you need to copy the value to a temporary, and repeat that.
-=item Character > 255 in vec()
-
-(F) You applied the vec() function to a UTF8 string which contained
-a character > 255. vec() currently only operates on characters < 256.
-
=item chmod() mode argument is missing initial 0
(W chmod) A novice will sometimes say