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bug#5183: 23.1; doc for `font-lock-extra-managed-props'

From: Lars Ingebrigtsen
Subject: bug#5183: 23.1; doc for `font-lock-extra-managed-props'
Date: Wed, 27 Apr 2016 22:23:09 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.1.50 (gnu/linux)

"Drew Adams" <address@hidden> writes:

> It is not clear from the doc what this variable does or how it works.
> The doc string says:
> "Additional text properties managed by font-lock.
> This is used by `font-lock-default-unfontify-region' to decide
> what properties to clear before refontifying a region."
> This speaks only of clearing the properties. It says nothing about how
> (re-)fontifying works for such extra properties.

I think it's pretty clear: These are the font properties that are
managed (i.e., cleared and set as font-lock decides), and that you can't
rely on being preserved if you set them yourself...

So I don't quite understand what you don't understand here.  :-)

(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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