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Re: GNU Emacs 24 Performance Issues in 'add-text-properties

From: Stefan Monnier
Subject: Re: GNU Emacs 24 Performance Issues in 'add-text-properties
Date: Wed, 03 Sep 2014 22:45:28 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux)

>            (add-text-properties (- startc 2) (- endc 0)  '(face           
> '(:foreground  "gray")))

This call, like any other call that changes text-properties is
considered as a buffer modification.  So the modification hooks are run,
which can include font-lock stuff (which will end up overwriting your
`face' property, by the way) and other fun, which could end up
being costly.


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