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From: "Stefan Monnier" <monnier+gnu/emacs@RUM.cs.yale.edu>
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Subject: Re: new text property
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>     Miles> Which obstacles are those?
> 
> If I knew, I'd say.
> 
> What I do know is that font-lock itself has a minimum of five
> implementations (font-lock, font-lock-cache, lazy-lock, lazy-shot, and
> jit-lock).

font-lock-cache, lazy-lock, lazy-shot, and jit-lock and 4 different
implementations of various mechanisms to try and reduce the amount
of work that font-lock does.  They are mostly orthogonal to font-lock
itself and they are in no way reimplementations of font-lock.

> Primitive highlighting has at least three interfaces
> (overlays, text properties, extents).  This looks like an area ripe
> for consolidation, not proliferation, of APIs to me.

`extents' are the consolidation, aren't they ?


	Stefan