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Posted to issues@lucene.apache.org by "Brian Feldman (Jira)" <ji...@apache.org> on 2021/02/01 14:38:00 UTC

[jira] [Updated] (LUCENE-9718) REGEX Pattern Search, character classes with quantifiers do not work

     [ https://issues.apache.org/jira/browse/LUCENE-9718?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brian Feldman updated LUCENE-9718:
----------------------------------
    Priority: Minor  (was: Major)

> REGEX Pattern Search, character classes with quantifiers do not work
> --------------------------------------------------------------------
>
>                 Key: LUCENE-9718
>                 URL: https://issues.apache.org/jira/browse/LUCENE-9718
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: core/search
>    Affects Versions: 7.7.3, 8.6.3
>            Reporter: Brian Feldman
>            Priority: Minor
>
> Character classes with a quantifier do not work, no error is given and no results are returned. For example \d\{2} or \d\{2,3} as is commonly written in most languages supporting regular expressions, simply and quietly does not work.  A user work around is to write them fully out such as \d\d or [0-9][0-9] or as [0-9]\{2,3} .
>  
> This inconsistency or limitation is not documented, wasting the time of users as they have to figure this out themselves. I believe this inconsistency should be clearly documented and an effort to fixing the inconsistency would improve pattern searching.



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