bug#32237: 27.0.50; Function in before-change-functions is called with first argument greater than the second

[Michał Kondraciuk]

If I eveluate the sexp below with M-: in emacs -Q, I get the message
"before change 4 1", which is unexpected.  The second argument should be
greater than the first one, according to the documentation.

(with-current-buffer "*scratch*"
  (erase-buffer)
  (insert "foo")
  (add-hook 'before-change-functions
            (lambda (beg end)
              (message "before change %d %d" beg end))
            nil t)
  (with-temp-buffer
    (insert "foo")
    (let ((temp (current-buffer)))
      (with-current-buffer "*scratch*"
        (replace-buffer-contents temp)))))


Repository revision: 2c242cb1a2956ecfa894d0110b837d4ecc43a69c