fix latin-1 bug

--HG--
branch : pmacs2

buffer/__init__.py

@@ -685,14 +685,14 @@ class FileBuffer(Buffer):
         try:
             data = self.make_string()
             if self.windows[0].mode.savetabs:
-                data = data.replace("    ", "\t").encode(self.codec)
-                
-            data = self.write_filter(data)
+                data = data.replace("    ", "\t")
+            data = self.write_filter(data.encode(self.codec))
     
             f2 = self._open_file_w(self.path, preserve=False)
             f2.write(self.bytemark + data)
             f2.close()
-        except Exception, e:
+        #except Exception, e:
+        except NameError, e:
             if exists: shutil.copyfile(temp_path, self.path)
             raise e
         else: