Improve the Edge/NGramTokenizer/Filters
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Key: LUCENE-3907
URL: https://issues.apache.org/jira/browse/LUCENE-3907
Project: Lucene - Java
Issue Type: Improvement
Reporter: Michael McCandless
Fix For: 4.0
Our ngram tokenizers/filters could use some love. EG, they output ngrams in
multiple passes, instead of "stacked", which messes up offsets/positions and
requires too much buffering (can hit OOME for long tokens). They clip at 1024
chars (tokenizers) but don't (token filters). The split up surrogate pairs
incorrectly.
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