* lisp/vc/diff-mode.el (diff-font-lock-keywords): Add more Git headers.
* lisp/gnus/mm-view.el (mm-display-inline-fontify): Set mode to the selected major-mode, so diff-mode could be detected afterwards.
* lisp/gnus/mm-view.el (mm-display-inline-fontify): Set mode to the selected major-mode, so diff-mode could be detected afterwards.