sb> Because normal-mode restores the font lock state. sb> I am using fast-lock. Raymond> Could this be the key? I've noticed that after Right on: With an unpatched vc.elc? fontification survives vc-revert-buffer when I have this in my .emacs: (setq font-lock-support-mode 'fast-lock-mode) Fontification is lost when I use any of these: (setq font-lock-support-mode 'font-lock-mode) (setq font-lock-support-mode 'lazy-lock-mode) For font-lock-mode fontification is lost after `revert-buffer' calls `insert-file-contents'. All of this in 21.1.4 WindowsNT4sp4 native. BTW: Although font-lock-support-mode is documented, it does not seem to be defined anywhere. Is this intentinal? Seem to me it should be defcustomed to take on any of the three choices above. Regards, Adrian Raymond> revert-buffer on large files lazy-shot doesn't fontify Raymond> anything. Only new stuff is fontified. Existing stuff Raymond> that hasn't been changed isn't fontified. So perhaps Raymond> lazy-shot is getting confused after revert-buffer about Raymond> what has been fontified and what has not? Raymond> Ray