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https://issues.apache.org/jira/browse/LUCENE-6874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14985799#comment-14985799
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Uwe Schindler commented on LUCENE-6874:
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For those people that tend to think that StandardTokenizer is too aggressive, I
generally suggest to my users to use ClassicTokenizer if they know that they
only have European languages in their index. This is one reason why I was
always against removing/deprecating ClassicTokenizer! It does a really good job
for plain european text and also keeps most product numbers together (because
it has quite good heuristics). It only breaks product numbers with slashes
(e.g., "PS-10/20").
> WhitespaceTokenizer should tokenize on NBSP
> -------------------------------------------
>
> Key: LUCENE-6874
> URL: https://issues.apache.org/jira/browse/LUCENE-6874
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/analysis
> Reporter: David Smiley
> Priority: Minor
> Attachments: LUCENE-6874.patch
>
>
> WhitespaceTokenizer uses [Character.isWhitespace
> |http://docs.oracle.com/javase/8/docs/api/java/lang/Character.html#isWhitespace-int-]
> to decide what is whitespace. Here's a pertinent excerpt:
> bq. It is a Unicode space character (SPACE_SEPARATOR, LINE_SEPARATOR, or
> PARAGRAPH_SEPARATOR) but is not also a non-breaking space ('\u00A0',
> '\u2007', '\u202F')
> Perhaps Character.isWhitespace should have been called
> isLineBreakableWhitespace?
> I think WhitespaceTokenizer should tokenize on this. I am aware it's easy to
> work around but why leave this trap in by default?
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