Shawn Heisey created LUCENE-7960:
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Summary: NGram filters -- add option to keep short terms
Key: LUCENE-7960
URL: https://issues.apache.org/jira/browse/LUCENE-7960
Project: Lucene - Core
Issue Type: Improvement
Components: modules/analysis
Reporter: Shawn Heisey
When ngram or edgengram filters are used, any terms that are shorter than the
minGramSize are completely removed from the token stream.
This is probably 100% what was intended, but I've seen it cause a lot of
problems for users. I am not suggesting that the default behavior be changed.
That would be far too disruptive to the existing user base.
I do think there should be a new boolean option, with a name like
keepShortTerms, that defaults to false, to allow the short terms to be
preserved.
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