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From "Earwin Burrfoot (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-2019) map unicode process-internal codepoints to replacement character
Date Sat, 31 Oct 2009 12:57:59 GMT

    [ https://issues.apache.org/jira/browse/LUCENE-2019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12772246#action_12772246
] 

Earwin Burrfoot commented on LUCENE-2019:
-----------------------------------------

bq. if you disagree with this patch, then you should also disagree with treating U+FFFF special!
I don't see how in the world U+FFFF is different than any other codepoint in the noncharacter
category in this regard!
Yes! The best treatment a library can offer to your data if you're not explicitly requesting
transformation is transparently passing it in and out.
If Lucene had cleanly separated text/binary data API, it would be okay to mangle text input.
But now such mangling just messes up other people's attempts of building said type-safe API
on top of Lucene.

> 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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