--- a/LineNumberReadStream.st	Wed Jul 05 11:07:25 2017 +0200
+++ b/LineNumberReadStream.st	Thu Jul 13 12:34:30 2017 +0200
@@ -185,6 +185,12 @@
 
 isLineNumberReadStream
     ^ true
+!
+
+isPositionable
+    ^ inputStream isPositionable
+
+    "Created: / 13-07-2017 / 12:23:21 / cg"
 ! !
 
 !LineNumberReadStream methodsFor:'reading'!