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From "Michael McCandless (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-2019) map unicode process-internal codepoints to replacement character
Date Fri, 30 Oct 2009 21:37:59 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12772104#action_12772104
] 

Michael McCandless commented on LUCENE-2019:
--------------------------------------------

The patch looks good, and is non-intrusive, but I think we need to somehow answer the larger
question about whether Lucene should in fact be in the business of replacing all "invalid
for interchange" characters.  Really it comes down to the semantics question of whether Lucene
is in fact "process internal" to an application (or, whether we want to allow applications
to treat Lucene that way).

> map unicode process-internal codepoints to replacement character
> ----------------------------------------------------------------
>
>                 Key: LUCENE-2019
>                 URL: https://issues.apache.org/jira/browse/LUCENE-2019
>             Project: Lucene - Java
>          Issue Type: Improvement
>          Components: Index
>            Reporter: Robert Muir
>            Priority: Minor
>         Attachments: LUCENE-2019.patch
>
>
> A spinoff from LUCENE-2016.
> There are several process-internal codepoints in unicode, we should not store these in
the index.
> Instead they should be mapped to replacement character (U+FFFD), so they can be used
process-internally.
> An example of this is how Lucene Java currently uses U+FFFF process-internally, it can't
be in the index or will cause problems. 

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