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https://issues.apache.org/jira/browse/LUCENE-2094?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12783842#action_12783842
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DM Smith commented on LUCENE-2094:
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bq. If you create the StopFilter with Version.LUCENE_29 it is enabled. If you
pass this version to QP, it's enabled, too. Very simple?
Yes. But, IMHO, this seems like advocating that a desired behavior be gained by
a backward compatibility mechanism.
I see two problems in using Version to enable position increments (or any other
particular behavior):
a) If a prior behavior is desired now, one should not need to use a prior
Version to get it.
b) Version codifies a particular combination of behavior. It does not allow for
rolling one's combination.
Make that 3 problems:
c) At some point a prior version's behavior will/should be removed.
It seems like this was discussed at length for creating a Settings object. I'd
rather see Attribute/AttributeSources used for such a thing than Version.
> Prepare CharArraySet for Unicode 4.0
> ------------------------------------
>
> Key: LUCENE-2094
> URL: https://issues.apache.org/jira/browse/LUCENE-2094
> Project: Lucene - Java
> Issue Type: Bug
> Components: Analysis
> Affects Versions: 1.9, 2.0.0, 2.1, 2.2, 2.3, 2.3.1, 2.3.2, 2.3.3, 2.4,
> 2.4.1, 2.4.2, 2.9, 2.9.1, 2.9.2, 3.0, 3.0.1, 3.1
> Reporter: Simon Willnauer
> Assignee: Uwe Schindler
> Fix For: 3.1
>
> Attachments: LUCENE-2094.patch, LUCENE-2094.patch, LUCENE-2094.patch,
> LUCENE-2094.patch, LUCENE-2094.patch, LUCENE-2094.txt, LUCENE-2094.txt,
> LUCENE-2094.txt
>
>
> CharArraySet does lowercaseing if created with the correspondent flag. This
> causes that String / char[] with uncode 4 chars which are in the set can not
> be retrieved in "ignorecase" mode.
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