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https://issues.apache.org/jira/browse/LUCENE-7827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16138356#comment-16138356
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Mikhail Khludnev commented on LUCENE-7827:
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I'm trying to refresh the context and wondered how minPrefixChars=0 could bring 
a footprint at all. Since it should yield zero length ngrams. 

> disable "textgrams" when minPrefixChars=0 AnalyzingInfixSuggester 
> ------------------------------------------------------------------
>
>                 Key: LUCENE-7827
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7827
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Mikhail Khludnev
>            Priority: Minor
>         Attachments: LUCENE-7827.patch, LUCENE-7827.patch, LUCENE-7827.patch, 
> LUCENE-7827.patch
>
>
> The current code allows to set minPrefixChars=0, but it creates an 
> unnecessary {{textgrams}} field, and might bring significant footprint.  
> Bypassing it keeps existing tests green.



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