--- a/liboctave/str-vec.cc
+++ b/liboctave/str-vec.cc
@@ -123,12 +123,12 @@
       octave_idx_type k = 0;
 
       for (octave_idx_type i = 1; i < len; i++)
-	if (elem(i) != elem(k))
-	  if (++k != i)
-	    elem(k) = elem(i);
+        if (elem(i) != elem(k))
+          if (++k != i)
+            elem(k) = elem(i);
 
       if (len != ++k)
-	resize (k);
+        resize (k);
     }
 
   return *this;
@@ -209,7 +209,7 @@
     {
       octave_idx_type name_length = elem (i).length ();
       if (name_length > max_name_length)
-	max_name_length = name_length;
+        max_name_length = name_length;
     }
 
   // Allow at least two spaces between names.
@@ -243,21 +243,21 @@
       // Print the next row.
 
       while (1)
-	{
-	  std::string nm = elem (count);
+        {
+          std::string nm = elem (count);
 
-	  os << nm;
-	  octave_idx_type name_length = nm.length ();
+          os << nm;
+          octave_idx_type name_length = nm.length ();
 
-	  count += nr;
-	  if (count >= total_names)
-	    break;
+          count += nr;
+          if (count >= total_names)
+            break;
 
-	  octave_idx_type spaces_to_pad = max_name_length - name_length;
-	  for (octave_idx_type i = 0; i < spaces_to_pad; i++)
-	    os << " ";
-	  pos += max_name_length;
-	}
+          octave_idx_type spaces_to_pad = max_name_length - name_length;
+          for (octave_idx_type i = 0; i < spaces_to_pad; i++)
+            os << " ";
+          pos += max_name_length;
+        }
       os << "\n";
     }