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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: font lock woes
Date: Mon, 04 Mar 2013 11:03:42 -0500	[thread overview]
Message-ID: <jwvehfvcgws.fsf-monnier+gmane.emacs.help@gnu.org> (raw)
In-Reply-To: slrnkj7mon.d23.joostkremers@j.kremers4.news.arnhem.chello.nl

> This suggests to me that I should be able to do:
> ,----
> | (font-lock-add-keywords nil `((,(regexp-quote "{++") . '(face cm-addition-face read-only t))) t)
> `----
> but for some reason, the only thing that works is:
> ,----
> | (font-lock-add-keywords nil `((,(regexp-quote "{++") 0 '(face cm-addition-face read-only t))
> `----

In which way does the other one not work?  Did you check the resulting
font-lock-keywords?

> A second thing I don't understand is how to remove the read-only
> property again when the mode is deactivated.  I was thinking I should be
> able to do the following:

> ,----
> | (font-lock-remove-keywords nil `((,(regexp-quote "{++") 0 '(face cm-addition-face read-only t))))
> | (let ((inhibit-read-only t))
> |   (font-lock-fontify-buffer))
> | (setq font-lock-extra-managed-props (delq 'read-only font-lock-extra-managed-props))
> `----

font-lock-fontify-buffer just schedules a refontification, which will be
done later, on-the-fly, piece by piece as text is displayed.

Much simpler is to remove-text-properties by hand.


        Stefan




  reply	other threads:[~2013-03-04 16:03 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-03-03 23:22 font lock woes Joost Kremers
2013-03-04 16:03 ` Stefan Monnier [this message]
     [not found] ` <mailman.21363.1362413049.855.help-gnu-emacs@gnu.org>
2013-03-04 18:54   ` Joost Kremers
2013-03-04 22:32     ` Stefan Monnier
     [not found]     ` <mailman.21401.1362436369.855.help-gnu-emacs@gnu.org>
2013-03-05 18:07       ` Joost Kremers
2013-03-06  2:43         ` Stefan Monnier
     [not found]         ` <mailman.21515.1362537854.855.help-gnu-emacs@gnu.org>
2013-03-06 20:27           ` Joost Kremers
2013-03-09 13:09             ` Stefan Monnier
     [not found]             ` <mailman.21754.1362834587.855.help-gnu-emacs@gnu.org>
2013-03-11 19:41               ` Joost Kremers

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