lib/expressive_grammar.treetop in expressive-0.0.2 vs lib/expressive_grammar.treetop in expressive-0.0.3

@@ -15,14 +15,18 @@
   rule list
     '(' statement+ ')' <List>
   end
 
   rule value
-    (boolean / number)
+    (string / boolean / number)
   end
 
   rule word
     [a-zA-Z]+
+  end
+
+  rule string
+    '"' ([^"\\] / "\\" . )* '"' <StringValue>
   end
 
   rule number
     ( float / integer )
   end