[jira] [Updated] (LUCENE-6874) WhitespaceTokenizer should tokenize on NBSP

["Uwe Schindler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-6874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Uwe Schindler updated LUCENE-6874:
----------------------------------
    Attachment: LUCENE-6874.patch

Patch that adds the ICU variant of the filter. This is the only way to do this right: It conforms to Unicode and also uses Unicode's fast reference implementation.

I also added a test.

> 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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