Bug 53323

Summary:	objects for target="pattern" is inherited to the result of FcMatchFont
Product:	fontconfig	Reporter:	Akira TAGOH <akira>
Component:	library	Assignee:	fontconfig-bugs
Status:	RESOLVED MOVED	QA Contact:	Behdad Esfahbod <freedesktop>
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Akira TAGOH 2012-08-10 07:43:46 UTC

The quote from the document:

        use rgb sub-pixel ordering to improve glyph appearance on
        LCD screens.  Changes affecting rendering, but not matching
        should always use target="font".

So the following rule should be affected to the result of FcPattern for FcMatchFont:

<match target="pattern">
  <edit name="rgba" mode="assign">
    <const>rgb</const>
  </edit>
</match>

but it does:
$ fc-match -v | grep rgba
        rgba: 1(i)(s)

This behavior messes up the rule of target="font".

Aside from that, right now fontconfig warns when editing the user-defined object on target="scan" though, we should do it for others if it's not desirable and for target="pattern" and target="font" too.

Comment 1 Akira TAGOH 2012-08-10 07:45:24 UTC

(In reply to comment #0)
> So the following rule should be affected to the result of FcPattern for
> FcMatchFont:

I meant "should NOT"

Comment 2 GitLab Migration User 2018-08-20 21:45:53 UTC

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