[Xapian-tickets] [Xapian] #521: Precedence of HATE is surprising

[Xapian]

#521: Precedence of HATE is surprising
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 Reporter:  olly         |       Owner:  olly 
     Type:  defect       |      Status:  new  
 Priority:  normal       |   Milestone:  1.2.x
Component:  QueryParser  |     Version:  1.2.3
 Severity:  normal       |    Keywords:       
Blockedby:               |    Platform:  All  
 Blocking:               |  
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Description changed by olly:

Old description:

> This query:
>
> {{{a OR b -c}}}
>
> gets parsed as:
>
> {{{a OR (b -c}}}
>
> rather than the more obvious interpretation of:
>
> {{{(a OR b) -c}}}
>
> While this appears to be just a precedence issue, actually NOT is
> resolved within a "term group" and {{{b -c}}} is a term group here, so
> this might take a bit of reworking to fix.

New description:

 This query:

 {{{a OR b -c}}}

 gets parsed as:

 {{{a OR (b -c)}}}

 rather than the more obvious interpretation of:

 {{{(a OR b) -c}}}

 While this appears to be just a precedence issue, actually HATE is
 resolved within a "term group" and {{{b -c}}} is a term group here, so
 this might take a bit of reworking to fix.

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Ticket URL: <http://trac.xapian.org/ticket/521#comment:1>
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