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https://issues.apache.org/jira/browse/LUCENE-7799?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15980913#comment-15980913
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Jim Ferenczi commented on LUCENE-7799:
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There is an option called {{autoGenerateMultiTermSynonymsPhraseQuery}} which 
when activated builds phrase query for multi-terms synonyms. The naming is a 
bit misleading but it can achieve what you're describing. The idea, which 
should maybe be extended, is to build a phrase query when side paths of 
different length are encountered inside the query. With a 
WordDelimiterGraphFilter that preserves original tokens ({{preserveOriginal}}) 
this heuristic works perfectly since each split creates side paths of different 
length.

> Classic query parser should allow autoGeneratePhraseQueries=true when 
> splitOnWhitespace=false
> ---------------------------------------------------------------------------------------------
>
>                 Key: LUCENE-7799
>                 URL: https://issues.apache.org/jira/browse/LUCENE-7799
>             Project: Lucene - Core
>          Issue Type: Bug
>          Components: core/queryparser
>            Reporter: Steve Rowe
>
> LUCENE-7533 disabled the option combination 
> {{splitOnWhitespace=false}}/{{autoGeneratePhraseQueries=true}} because of how 
> {{autoGeneratePhraseQueries=true}} is handled: a query chunk is treated as if 
> it were literally quoted.  When {{splitOnWhitespace=false}}, a query chunk 
> can be multiple whitespace-separated words, and auto-quoting multiple terms 
> will produce inappropriate phrase queries.
> I have an idea about how to fix this: {{autoGeneratePhraseQueries=true}} is 
> supposed to cause phrase queries to be constructed when multiple analyzed 
> terms result from a single query word, e.g. when WordDelimiter(Graph)Filter 
> splits words up.  Maybe this could be re-implemented in terms of offsets, 
> since all terms from the same original term share the same offsets.



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