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https://issues.apache.org/jira/browse/LUCENE-588?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12546478
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Daniel Naber commented on LUCENE-588:
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The problem is that the WildcardQuery itself doesn't have a concept of escaped
characters. The escape characters are removed in QueryParser. This mean "t?\?t"
will arrive as "t??t" in WildcardQuery and the second question mark is also
interpreted as a wildcard.
> Escaped wildcard character in wildcard term not handled correctly
> -----------------------------------------------------------------
>
> Key: LUCENE-588
> URL: https://issues.apache.org/jira/browse/LUCENE-588
> Project: Lucene - Java
> Issue Type: Bug
> Components: QueryParser
> Affects Versions: 2.0.0
> Environment: Windows XP SP2
> Reporter: Sunil Kamath
>
> If an escaped wildcard character is specified in a wildcard query, it is
> treated as a wildcard instead of a literal.
> e.g., t\??t is converted by the QueryParser to t??t - the escape character is
> discarded.
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