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Re: font-lock-syntactic-keywords obsolet?


From: Stefan Monnier
Subject: Re: font-lock-syntactic-keywords obsolet?
Date: Sun, 19 Jun 2016 19:59:01 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux)

> A critical reason, which I've told you before, is that on any buffer
> change, the syntax-propertize-function mechanism blasts all s-t
> properties out of existence from the point the change is made onwards.
> This is wasteful of run-time, given that these properties are quite
> expensive to apply.

Normally, properties are only applied/needed up to window-end, so
"blasts all s-t properties out of existence from the point the change is
made onwards" really isn't a big deal at all.


        Stefan




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