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From "Robert Muir (JIRA)" <>
Subject [jira] [Resolved] (LUCENE-3982) regex support in queryparser needs documented, and called out in CHANGES.txt
Date Tue, 29 May 2012 15:34:23 GMT


Robert Muir resolved LUCENE-3982.

    Resolution: Fixed

thanks Hoss
> regex support in queryparser needs documented, and called out in CHANGES.txt
> ----------------------------------------------------------------------------
>                 Key: LUCENE-3982
>                 URL:
>             Project: Lucene - Java
>          Issue Type: Sub-task
>          Components: core/queryparser
>            Reporter: Hoss Man
>            Priority: Blocker
>             Fix For: 4.0
> Spun off of LUCENE-2604 where everyone agreed this needed done, but no one has done it
yet, and rmuir didn't want to leave the issue open...
> {quote}
> some issues were pointed out in a recent mailing list thread that definitely seem like
they should be addressed before this is officially released...
> * queryparsersyntax.xml doesn't mention this feature at all -- as major new syntax is
should really get it's own section with an example showing the syntax
> * queryparsersyntax.xml's section on "Escaping Special Characters" needs to mention that
'/' is a special character
> Also: Given that Yury encountered some real world situations in which the new syntax
caused problems with existing queries, it seems like we should definitely make a note about
this possibility more promonient ... i'm not sure if it makes sense in MIGRATE.txt but at
a minimum it seems like the existing CHANGES.txt entry should mention it, maybe something
> {noformat}
> * LUCENE-2604: Added RegexpQuery support to QueryParser. Regular expressions
>   are now directly supported by the standard queryparser using the syntax... 
>      fieldName:/expression/ OR /expression against default field/
>   Users who wish to search for literal "/" characters are advised to 
>   backslash-escape or quote those characters as needed. 
>   (Simon Willnauer, Robert Muir)
> {noformat}
> {quote}

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