diff --git a/ndiff/ndiff b/ndiff/ndiff
index 6c733f58e..dc2087239 100755
--- a/ndiff/ndiff
+++ b/ndiff/ndiff
@@ -739,6 +739,10 @@ class Table(object):
             strings.append(s)
         self.rows.append(strings)
 
+    def append_raw(self, s):
+        """Append a raw string for a row that is not formatted into columns."""
+        self.rows.append(s)
+
     def __len__(self):
         return len(self.rows)
 
@@ -747,12 +751,16 @@ class Table(object):
         for row in self.rows:
             parts = [self.prefix]
             i = 0
-            while i < len(row):
-                parts.append(row[i].ljust(self.widths[i]))
-                if i < len(self.padding):
-                    parts.append(self.padding[i])
-                i += 1
-            lines.append(u"".join(parts).rstrip())
+            if isinstance(row, basestring):
+                # A raw string.
+                lines.append(row)
+            else:
+                while i < len(row):
+                    parts.append(row[i].ljust(self.widths[i]))
+                    if i < len(self.padding):
+                        parts.append(self.padding[i])
+                    i += 1
+                lines.append(u"".join(parts).rstrip())
         return u"\n".join(lines)
 
 def parse_port_list(port_list):
diff --git a/ndiff/ndifftest.py b/ndiff/ndifftest.py
index 6aea52dd0..f2dfa6ee0 100755
--- a/ndiff/ndifftest.py
+++ b/ndiff/ndifftest.py
@@ -641,6 +641,15 @@ class table_test(unittest.TestCase):
         t.append(("a", "b", "c", "d"))
         self.assertEqual(str(t), "<<<a>>>b!!!cd")
 
+    def test_append_raw(self):
+        """Test the append_raw method that inserts an unformatted row."""
+        t = Table("<* * *>")
+        t.append(("1", "2", "3"))
+        t.append_raw("   row   ")
+        self.assertEqual(str(t), "<1 2 3>\n   row   ")
+        t.append(("4", "5", "6"))
+        self.assertEqual(str(t), "<1 2 3>\n   row   \n<4 5 6>")
+
     def test_strip(self):
         """Test that trailing whitespace is stripped."""
         t = Table("* * * ")