Rupert Westenthaler created LUCENE-5203:
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Summary: WordDelimiterFilter stemEnglishPossessive option does not
work for Tokens ending with a digit
Key: LUCENE-5203
URL: https://issues.apache.org/jira/browse/LUCENE-5203
Project: Lucene - Core
Issue Type: Bug
Components: modules/analysis
Reporter: Rupert Westenthaler
Priority: Minor
For Token ending with "{digit}'s" the WordDelimiterFilter ignores the
stemEnglishPossessive configuration
e.g. in the text "SD500's poor underwater performance" the "'s" will not be
stemmed from SD500 even if stemEnglishPossessive="1".
The reason is that "WordDelimiterIterator#endsWithPossessive(int pos)" checks
for
isAlpha(charType(text[pos - 3]))
while it should also allow for isDigits(int type).
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