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a/src/query/wasastringtoquery.cpp b/src/query/wasastringtoquery.cpp
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    "("                              //3 
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    "("                              //3 
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      "([+-])?"                      //4 Force or exclude indicator
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      "([+-])?"                      //4 Force or exclude indicator
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      "("                            //5
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      "("                            //5
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        "([[:alpha:]][[:alnum:]:]*)" //6 Field spec: ie: "dc:title:letitre"
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        "([[:alpha:]][[:alnum:]:]*)" //6 Field spec: ie: "dc:title:letitre"
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        "[[:space:]]*"
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        "[[:space:]]*"
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        "(:)"            //7 Relation
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        "(:|=|>|<)"            //7 Relation
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        "[[:space:]]*)?"
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        "[[:space:]]*)?"
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      "("                            //8
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      "("                            //8
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        "(\""                        //9
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        "(\""                        //9
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          "([^\"]+)"                 //10 "A quoted term"
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          "([^\"]+)"                 //10 "A quoted term"
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        "\")"                        
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        "\")"