[Fontconfig-bugs] [Bug 63096] New: webfonts support?

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=63096

          Priority: medium
            Bug ID: 63096
          Assignee: fontconfig-bugs at lists.freedesktop.org
           Summary: webfonts support?
        QA Contact: freedesktop at behdad.org
          Severity: normal
    Classification: Unclassified
                OS: All
          Reporter: akira at tagoh.org
          Hardware: Other
            Status: NEW
           Version: unspecified
         Component: library
           Product: fontconfig

firefox is calling FcFreeTypeQueryFace for webfonts like this:

        pattern =
            (*sQueryFacePtr)(mFace, gfxFontconfigUtils::ToFcChar8(""), 0,
NULL);

This fails now because we require the valid filename to generate hash value and
if not, simply fails because the matcher behaves wrong if some objects are
available or unavailable in the cache.

One idea to support this case is to define constant value and add an invalid
hash to the cache?

FWIW FcPatternDel should warn if one is going to delete objects which is in the
matcher perhaps.

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