The diff-mode hunk application works as expected now, and the
workaround that I had in .emacs wasn't correct to begin with.
;; Set the frame title to the name of the buffer, if supported.
(setq frame-title-format "%b")
;; Set the frame title to the name of the buffer, if supported.
(setq frame-title-format "%b")
-;; Currently needed to make Emacs 23 behave sanely.
-'(diff-jump-to-old-file t)
-
;; Disable the menu/tool bars when we're using X.
(menu-bar-mode -1)
(when window-system
;; Disable the menu/tool bars when we're using X.
(menu-bar-mode -1)
(when window-system