Description of problem:
We have an old version of diff2html, from Oct 2016 2.0.8 IIRC, there have been plenty of changes since then.
Write down the version being use eh!
The patch diff could work well.
This change has been deployed to partner Bugzilla  for pre-release testing, if your testing reveals any issues please update this bug.
This change is now live. If there are any issues, do not reopen this bug.
Instead, you should create a new bug and reference this bug.