Added failing test for special characters in collection values

Change-Id: I8b738e96dda82a1f7a65f7cd669ef8f175d8d058
diff --git a/src/main/antlr/collection/CollectionQuery.g4 b/src/main/antlr/collection/CollectionQuery.g4
index 869b759..bf57cdd 100644
--- a/src/main/antlr/collection/CollectionQuery.g4
+++ b/src/main/antlr/collection/CollectionQuery.g4
@@ -167,7 +167,7 @@
 ;
 
 multiword
-: '"' WORD+ '"'
+: '"' ~'"'* '"'
 ;
 
 relation
@@ -182,4 +182,4 @@
 : expr EOF
 | exprGroup EOF 
 | relation EOF
-;
\ No newline at end of file
+;
diff --git a/src/main/java/de/ids_mannheim/korap/query/serialize/CollectionQueryProcessor.java b/src/main/java/de/ids_mannheim/korap/query/serialize/CollectionQueryProcessor.java
index 7003425..9d167c0 100644
--- a/src/main/java/de/ids_mannheim/korap/query/serialize/CollectionQueryProcessor.java
+++ b/src/main/java/de/ids_mannheim/korap/query/serialize/CollectionQueryProcessor.java
@@ -554,4 +554,4 @@
         // Return the generated tree
         return tree;
     }
-}
\ No newline at end of file
+}
diff --git a/src/test/java/de/ids_mannheim/korap/query/serialize/CollectionQueryProcessorTest.java b/src/test/java/de/ids_mannheim/korap/query/serialize/CollectionQueryProcessorTest.java
index 2cc16dc..61a2813 100644
--- a/src/test/java/de/ids_mannheim/korap/query/serialize/CollectionQueryProcessorTest.java
+++ b/src/test/java/de/ids_mannheim/korap/query/serialize/CollectionQueryProcessorTest.java
@@ -87,6 +87,15 @@
         assertEquals("title", res.at("/collection/key").asText());
         assertEquals("IDS Mannheim", res.at("/collection/value").asText());
         assertEquals("match:contains", res.at("/collection/match").asText());
+
+        collection = "title~\"IDS:Mannheim\"";
+        qs.setQuery(query, ql);
+        qs.setCollection(collection);
+        res = mapper.readTree(qs.toJSON());
+        assertEquals("koral:doc", res.at("/collection/@type").asText());
+        assertEquals("title", res.at("/collection/key").asText());
+        assertEquals("IDS:Mannheim", res.at("/collection/value").asText());
+        assertEquals("match:contains", res.at("/collection/match").asText());
     }
 
     @Test