Michael McCandless created LUCENE-5180:
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Summary: ShingleFilter should make shingles from trailing holes
Key: LUCENE-5180
URL: https://issues.apache.org/jira/browse/LUCENE-5180
Project: Lucene - Core
Issue Type: Improvement
Components: modules/analysis
Reporter: Michael McCandless
Fix For: 5.0, 4.5
When ShingleFilter hits a hole, it uses _ as the token, e.g. bigrams for "the
dog barked", if you have a StopFilter removing the, would be: "_ dog", "dog
barked".
But if the input ends with a stopword, e.g. "wizard of", ShingleFilter fails to
produce "wizard _" due to LUCENE-3849 ... once we fix that I think we should
fix ShingleFilter to make shingles for trailing holes too ...
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