From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: GNU Emacs 24 Performance Issues in 'add-text-properties
Date: Wed, 03 Sep 2014 22:45:28 -0400 [thread overview]
Message-ID: <jwvk35kxg0d.fsf-monnier+gmane.emacs.help@gnu.org> (raw)
In-Reply-To: 7a14bdfa-e253-440c-999c-1cccde9f5d52@googlegroups.com
> (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.
Stefan
next prev parent reply other threads:[~2014-09-04 2:45 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-03 20:19 GNU Emacs 24 Performance Issues in 'add-text-properties joseph.koziatek
2014-09-04 2:45 ` Stefan Monnier [this message]
2014-09-04 18:12 ` joseph.koziatek
2014-09-04 20:04 ` Stefan Monnier
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