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Date: Mon, 10 Oct 2011 08:42:29 +0000 (UTC)
From: "Bernhard Berger (Created) (JIRA)" <jira@apache.org>
To: dev@lucene.apache.org
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Subject: [jira] [Created] (SOLR-2819) Wrong isHex()-method in
 HTMLStripCharFilter
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Wrong isHex()-method in HTMLStripCharFilter
-------------------------------------------

                 Key: SOLR-2819
                 URL: https://issues.apache.org/jira/browse/SOLR-2819
             Project: Solr
          Issue Type: Bug
    Affects Versions: 3.4
            Reporter: Bernhard Berger
            Priority: Trivial


In org.apache.solr.analysis HTMLStripCharFilter use a wrong isHex()-method that return characters like 'X', 'Y' as valid hex chars:

{code}
  private boolean isHex(int ch) {
    return (ch>='0' && ch<='9') ||
           (ch>='A' && ch<='Z') ||
           (ch>='a' && ch<='z');
  }
{code}

If only characters from [0-9a-zA-Z] are allowed, the readNumericEntity method will detect faster a mismatch.


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