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https://issues.apache.org/jira/browse/LUCENE-9336?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17107142#comment-17107142
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Mark Harwood commented on LUCENE-9336:
--------------------------------------
Fixed in
https://github.com/apache/lucene-solr/commit/1efce5444dd40142c55c5a3a30eeebc7b86796c3
> RegExp.java - add support for character classes like \w
> -------------------------------------------------------
>
> Key: LUCENE-9336
> URL: https://issues.apache.org/jira/browse/LUCENE-9336
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/other
> Reporter: Mark Harwood
> Assignee: Mark Harwood
> Priority: Major
>
> Character classes commonly used in regular expressions like \s for whitespace
> are not currently supported and may well be returning false negatives because
> they don't throw any "unsupported" errors.
> The proposal is that the RegExp class add support for the set of character
> classes [defined by Java's Pattern
> API|https://docs.oracle.com/javase/tutorial/essential/regex/pre_char_classes.html]
> I can work on a patch if we think this is something we want to consider.
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