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    <body><span class="vcard"><a class="email" href="mailto:freedesktop@behdad.org" title="Behdad Esfahbod <freedesktop@behdad.org>"> <span class="fn">Behdad Esfahbod</span></a>
</span> changed
              <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - webfonts support?"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=63096">bug 63096</a>
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            <th>What</th>
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            <th>Added</th>
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           <td style="text-align:right;">CC</td>
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           <td>freedesktop@behdad.org
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - webfonts support?"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=63096#c1">Comment # 1</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW --- - webfonts support?"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=63096">bug 63096</a>
              from <span class="vcard"><a class="email" href="mailto:freedesktop@behdad.org" title="Behdad Esfahbod <freedesktop@behdad.org>"> <span class="fn">Behdad Esfahbod</span></a>
</span></b>
        <pre>(In reply to <a href="show_bug.cgi?id=63096#c0">comment #0</a>)
<span class="quote">> 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.</span >

In FcFreeTypeQueryFace (as opposed to FcFreeTypeQuery) we should use
FT_Load_Sfnt_Table() to get the font data and hash that.

<span class="quote">> 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.</span >

Humm.  Not sure about that.

The matcher should not fail if something is missing.  It should simply not
match.</pre>
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