--- a/python/hexfile.py	Wed Jul 24 22:40:29 2013 +0200
+++ b/python/hexfile.py	Thu Jul 25 08:11:30 2013 +0200
@@ -80,7 +80,8 @@
                 raise HexFileException('record type {0} not implemented'.format(typ))
 
     def __repr__(self):
-        return 'Hexfile with {} regions'.format(len(self.regions))
+        size = sum(len(r.data) for r in self.regions)
+        return 'Hexfile containing {} bytes'.format(size)
 
     def dump(self):
         print(self)
@@ -114,6 +115,9 @@
                     self.regions.remove(r2)
                     change = True
 
+    def merge(self, other):
+        for r in other.regions:
+            self.addRegion(r.address, r.data)
 
     def save(self, f):
         def emit(address, typ, data=bytes()):