Christoph Goller created LUCENE-9426:
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Summary: UnifiedHighlighter does not handle SpanNotQuery correctly.
Key: LUCENE-9426
URL: https://issues.apache.org/jira/browse/LUCENE-9426
Project: Lucene - Core
Issue Type: Bug
Affects Versions: 8.5.1
Environment: I tested with 8.5.1, but other versions are probably also
affected.
Reporter: Christoph Goller
If UnifiedHighlighter uses MemoryIndexOffsetStrategy, it does not treat
SpanNotQuery correctly.
Since UnifiedHighlighter uses actual search in order to determine which
locations to highlight, it should be consistent with search and only highlight
locations in a document that really match the query. However, it does not for
SpanNotQuery.
For the query spanNot(spanNear([content:100, content:dollars], 1, true),
content:thousand, 0, 0)
it produces
A <b>100</b> fucking <b>dollars</b> wasn't enough to fix it. ... We need
<b>100</b> thousand <b>dollars</b> to buy the house
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