The old code for this was

```PHP
$DIFF_INLINESTYLES = true;
$hdf               = new Diff(explode("\n", hsc($old_content)),
                                          explode("\n", hsc($new_content)));
$dformat           = new InlineDiffFormatter();
$hdiff             = $dformat->format($hdf);
$hdiff             = '<table>'.$hdiff.'</table>';
$DIFF_INLINESTYLES = false;
```

and I don't see any reason why we don't need the ``hsc()`` anymore in order to prevent HTML injection into subscription emails. The old code introduced the ``$old/new_content`` variables in order to need only one ``rawWiki``-call for the old/new revision.