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<th>Priority</th>
<td>medium
</td>
</tr>
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Gaming of fc-lang check rules"
href="https://bugs.freedesktop.org/show_bug.cgi?id=73461">73461</a>
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<th>Assignee</th>
<td>fontconfig-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Summary</th>
<td>Gaming of fc-lang check rules
</td>
</tr>
<tr>
<th>QA Contact</th>
<td>freedesktop@behdad.org
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
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<th>Reporter</th>
<td>abelcheung@gmail.com
</td>
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Component</th>
<td>orth
</td>
</tr>
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<th>Product</th>
<td>fontconfig
</td>
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<p>
<div>
<pre>This report is related to a patch against zh-hk.orth around 2006:
<a href="http://lists.freedesktop.org/archives/fontconfig/2006-January/001930.html">http://lists.freedesktop.org/archives/fontconfig/2006-January/001930.html</a>
It adds an extra Plane 2 code point for determining font supporting Hong Kong
characters.
Recently I discovered certain font tries to exploit this check, and only
created a *single glyph* in CJK extension B in order to claim it supports
zh-hk. I supposed it happened long time ago but nobody noticed. The font
concerned is open for download and is actually default font for certain
language in certain OS.
So I wonder if determining a policy like this would make sense or not: on orth
checks, a certain ballpark percentage of glyphs shall be done in order to claim
support, while (1) spreading the glyphs distribution more evenly, and/or (2)
create a list of more representative code points reflecting general use of the
language when range is large.</pre>
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