DO NOT REPLY [Bug 4555] New: - GermanStemmer crashes while indexing

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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=4555

GermanStemmer crashes while indexing

           Summary: GermanStemmer crashes while indexing
           Product: Lucene
           Version: unspecified
          Platform: Sun
        OS/Version: Solaris
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: Analysis
        AssignedTo: lucene-dev@jakarta.apache.org
        ReportedBy: nalle@ymail.de


Version: lucene-1.2-rc1.jar

Indexing of "alpha-geek2" works.
Indexing of "alpha-geek" throws exception. (Hope its not my inability.)

demo code which shows exception: http://www.nalle.de/TestIndex.java
Output of code:

indexed 1
java.lang.StringIndexOutOfBoundsException: String index out of range: -1
        at java.lang.StringBuffer.charAt(StringBuffer.java:283)
        at org.apache.lucene.analysis.de.GermanStemmer.resubstitute(Unknown 
Source)
        at org.apache.lucene.analysis.de.GermanStemmer.stem(Unknown Source)
        at org.apache.lucene.analysis.de.GermanStemFilter.next(Unknown Source)
        at org.apache.lucene.analysis.LowerCaseFilter.next(Unknown Source)
        at org.apache.lucene.index.DocumentWriter.invertDocument(Unknown Source)
        at org.apache.lucene.index.DocumentWriter.addDocument(Unknown Source)
        at org.apache.lucene.index.IndexWriter.addDocument(Unknown Source)
        at TestIndex.<init>(TestIndex.java:25)
        at TestIndex.main(TestIndex.java:36)

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