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https://issues.apache.org/jira/browse/SOLR-1553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12892233#action_12892233
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Graham P commented on SOLR-1553:
--------------------------------

Please ensure that the the edismax does not have old DisMax bug where a query 
for

bar - foo

gets treated like

bar -foo

Users do not expect the first query to remove all instances of "foo" from their 
results.  "-" meaning "forbidden" should only take effect when the "-" is 
followed by a non-whitespace character.  Similarly for +.   Like to SOLR-490, 
but I do not believe you need to re-interpret the original query as a phrase 
query "bar - foo" in order to fix the problem.



> extended dismax query parser
> ----------------------------
>
>                 Key: SOLR-1553
>                 URL: https://issues.apache.org/jira/browse/SOLR-1553
>             Project: Solr
>          Issue Type: New Feature
>            Reporter: Yonik Seeley
>             Fix For: 1.5, 3.1, 4.0
>
>         Attachments: edismax.unescapedcolon.bug.test.patch, 
> edismax.userFields.patch, SOLR-1553.patch, SOLR-1553.pf-refactor.patch
>
>
> An improved user-facing query parser based on dismax

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