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instead of easy-mmode-define-global-mode.  Add `:group font-lock'.
(font-lock-mode): Remove `:group font-lock'.

except in batch mode or when the -D command line option is given.

(font-lock-mode): Update `font-lock-mode-major-mode'.
(font-lock-set-defaults): Compiler defvar.
(font-lock-default-function): Take `font-lock-mode-major-mode' into account.

only font-lock-keywords is set.

(font-lock-multiline, font-lock-fontified, font-lock-set-defaults):
Move back to font-lock.el
(font-lock-default-function): Use font-lock-mode-internal.

(font-lock-default-function): Change arg name.

(font-lock-mode): Use font-lock-change-mode instead of
font-lock-unfontify-buffer.
(font-lock-maximum-size, font-lock-verbose): Add defvars.

to change-major-mode-hook when font lock is enabled.

(font-lock-set-defaults): Variable alist settings moved back into
font-lock-set-defaults-1.
(turn-on-font-lock-if-enabled): Always turn on font-lock unless it
is specifically excluded by the user.

don't use big font-lock machinery.

(font-lock-set-defaults): Use it.

(turn-on-font-lock-if-enabled): Don't use it.
(font-lock-symbol-category-alist): Delete.
(font-lock-default-function): Use new `char-property-alias-alist' to
make `font-lock-face' an alias for `face' when font-lock mode is
enabled.

(font-lock-default-function): New function, created from `font-lock-mode'.
(font-lock-mode): Just funcall `font-lock-default-function'.