Re: Inconsistency in font-lock

[Herbert Euler]

> > It's not nice.  We should write:
> > (defun font-lock-default-fontify-region (beg end &optional loudly)
>
> I think we should fix the docstring instead and just say that the function
> is called with 3 arguments.  How that function accepts them is irrelevant
> (the function may have 4 optional arguments if the programmer feels like
> it).

Well, from the caller's point of view, the third argument is less
meaningful.  In my opinion,

   (funcall font-lock-fontify-region-function start end nil)

is a bit worse than

   (funcall font-lock-fontify-region-function start end)

since the third argument `nil' is a surprise here.  Only start and
end positions are necessary for operations on a region.

Regards,
Guanpeng Xu

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