whoosh / src / whoosh / qparser /

Diff from to


     def query(self, parser):
         assert len(self.nodes) == 2
-        q = self.qclass(self.nodes[0].query(parser),
-                        self.nodes[1].query(parser))
+        qa = self.nodes[0].query(parser)
+        qb = self.nodes[1].query(parser)
+        if qa is None and qb is None:
+            q = query.NullQuery
+        elif qa is None:
+            q = qb
+        elif qb is None:
+            q = qa
+        else:
+            q = self.qclass(self.nodes[0].query(parser),
+                            self.nodes[1].query(parser))
         return attach(q, self)
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