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https://issues.apache.org/jira/browse/LUCENE-2019?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12772142#action_12772142
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Robert Muir edited comment on LUCENE-2019 at 10/30/09 10:47 PM:
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Yonik, i argue in your process-internal usecase, that its in fact
process-external.
in this case of concatenation you should instead use a control character, or
something more suitable for this purpose.
for example, you could use "information separator" controls 001C-001F, and this
is especially more nice than if you were to use U+FFFE, say for this purpose.
some other process could recognize that you were separating information, rather
than just using a noncharacter for process-internal use.
process-internal is somethign that won't be stored or interchanged in any way
(internal to the process)
was (Author: rcmuir):
Yonik, i argue in your process-internal usecase, that its in fact
process-external.
in this case of concatenation you should instead use a control character, or
something more suitable for this purpose.
process-internal is somethign that won't be stored or interchanged in any way
(internal to the process)
> 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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