Re: font-lock-fontify-block

[Gregory Heytings]

> > > Would you be OK with the idea of deprecating the use of 
> > > `font-lock-fontify-block' for the specific case where font-lock is not 
> > > enabled?
> >
> > I only ever use it in that case to _remove_ the faces from text yanked 
> > from a fontified buffer.  So that's another important use case for M-o 
> > M-o.
>
> Actually, I see I've misremembered: this is handy not when 
> font-lock-mode is off, but when it's on and I yank text from another 
> mode.  A typical use case is when I yank from some program fragment into 
> a text-mode buffer: the original fontification is left alone until I 
> type M-o M-o.

I have four remarks:

1. I was surprised to read this, it's something I never see.  It turns out 
that I don't see this because I have in my .emacs:

(global-whitespace-mode 1)
(setq whitespace-style '(face trailing empty))

2. That being said, font-lock-fontify-block is not a good solution to that 
problem, it doesn't work when the yanked text is larger than 16 lines, 
except of course with a prefix argument.

3. font-lock-flush would not solve that problem, it has no apparent effect 
in the case you mention.

4. Is this not something that could/should be done inside yank, with (if 
font-lock-mode (font-lock-fontify-region (point-min) (point-max)))?