Index: lucene/src/test/org/apache/lucene/search/TestMultiSearcher.java
===================================================================
--- lucene/src/test/org/apache/lucene/search/TestMultiSearcher.java	(revision 1034368)
+++ lucene/src/test/org/apache/lucene/search/TestMultiSearcher.java	(working copy)
@@ -26,6 +26,8 @@
 import org.apache.lucene.index.IndexReader;
 import org.apache.lucene.index.IndexWriter;
 import org.apache.lucene.index.IndexWriterConfig;
+import org.apache.lucene.index.MultiReader;
+import org.apache.lucene.index.RandomIndexWriter;
 import org.apache.lucene.index.Term;
 import org.apache.lucene.index.IndexWriterConfig.OpenMode;
 import org.apache.lucene.queryParser.QueryParser;
@@ -451,4 +453,42 @@
       dir1.close();
       dir2.close();
     }
+  
+  public void testCombine() throws Exception {
+    Directory dir1 = newDirectory();
+    RandomIndexWriter iw1 = new RandomIndexWriter(random, dir1);
+    Document doc1 = new Document();
+    doc1.add(newField("field", "foo bar", Field.Index.ANALYZED));
+    iw1.addDocument(doc1);
+    IndexReader reader1 = iw1.getReader();
+    iw1.close();
+    
+    Directory dir2 = newDirectory();
+    RandomIndexWriter iw2 = new RandomIndexWriter(random, dir2);
+    Document doc2 = new Document();
+    doc2.add(newField("field", "foo baz", Field.Index.ANALYZED));
+    iw2.addDocument(doc2);
+    IndexReader reader2 = iw2.getReader();
+    iw2.close();
+    
+    QueryParser qp = new QueryParser(TEST_VERSION_CURRENT, "field", new MockAnalyzer());
+    qp.setMultiTermRewriteMethod(MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE);
+    
+    MultiReader multireader = new MultiReader(reader1, reader2);
+    Searcher searcher = new IndexSearcher(multireader);
+    assertEquals(0, searcher.search(qp.parse("+foo -ba*"), 10).totalHits);
+    
+    Searcher searcher1 = new IndexSearcher(reader1);
+    Searcher searcher2 = new IndexSearcher(reader2);
+    searcher = new MultiSearcher(searcher1, searcher2);
+    if (VERBOSE)
+      System.out.println("rewritten form: " + searcher.rewrite(qp.parse("+foo -ba*")));
+    assertEquals(0, searcher.search(qp.parse("+foo -ba*"), 10).totalHits);
+
+    multireader.close();
+    reader1.close();
+    reader2.close();
+    dir1.close();
+    dir2.close();
+  }
 }