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https://issues.apache.org/jira/browse/LUCENE-1255?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12714039#action_12714039
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Mark Miller commented on LUCENE-1255:
-------------------------------------
why should the first token have an increment of 1? I think the first token
should always be 0. Increments are between tokens.
and why do you want to know if the first token had an inc of 0 or 1? I think
the -1 is a bug and it shows up elsewhere - eg spans,payloads, and most likely
highlighting with the SpanHighlighter.
> CheckIndex should allow term position = -1
> ------------------------------------------
>
> Key: LUCENE-1255
> URL: https://issues.apache.org/jira/browse/LUCENE-1255
> Project: Lucene - Java
> Issue Type: Bug
> Components: Index
> Affects Versions: 2.4
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 2.3.2, 2.4
>
> Attachments: LUCENE-1255.patch, LUCENE-1255.take2.patch
>
>
> Spinoff from this discussion:
>
> http://mail-archives.apache.org/mod_mbox/lucene-java-user/200803.mbox/%3cpine.lnx.4.62.0803292323350.16...@radix.cryptio.net%3e
> Right now CheckIndex claims the index is corrupt if you index a Token with -1
> position, which happens if your first token has positionIncrementGap set to 0.
> But, as far as I can tell, Lucene doesn't "mind" when this happens.
> So I plan to fix CheckIndex to allow this case. I'll backport to 2.3.2 as
> well.
> LUCENE-1253 is one example where Lucene's core analyzers could do this.
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