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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - characterSubrange returns a single character range for an empty range"
href="https://bugs.webkit.org/show_bug.cgi?id=159063">159063</a>
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<th>Summary</th>
<td>characterSubrange returns a single character range for an empty range
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<th>Classification</th>
<td>Unclassified
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>Safari 9
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<th>Hardware</th>
<td>Unspecified
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<th>OS</th>
<td>Unspecified
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>Normal
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>HTML Editing
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>ap@webkit.org
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<th>CC</th>
<td>enrica@apple.com, rniwa@webkit.org
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<pre>As seen in <a class="bz_bug_link
bz_status_NEW "
title="NEW - Handle (0, 0) ranges from Lookup"
href="show_bug.cgi?id=159062">bug 159062</a>, DictionaryLookup::rangeAtHitTestResult returns a 1-character string when -[LULookupDefinitionModule tokenRangeForString:range:options:] returns (0, 0).
This seems like a pretty crazy bug deep inside editing code - why do we do this? We pass (0, 0) to TextIterator::subrange, then it goes to characterSubrange, and it becomes 1-character when routed through a character iterator.</pre>
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