I have some problems with clearcase when trying to view the diff on the UI. It couldn't find the files since the filename was composed with filename.xxx@@/main/branch/id. So managed to get the file with a specific branch outside clearcase, copy to a tmp file and then use that file to create the diff. This will allow to add filenames + branches tags on the post-review and see them on the Diff UI.

I'm new to python so it might be some issues on the patch and code standards.

I only saw a problem and that is the httpd server user needs to have permission on the clearcase otherwise you will get cleartool: Error: Operation "get cleartext" failed: Permission denied. when getting the file.

Basically i had a branch named xpto and a made a diff between filename.cpp@@/main/LATEST;filename.cpp@@main/xpto/LATEST and the result diff was uploaded to the reviewboard but i couldnt see the file in the DIFF UI. 

Hope it helps more users using clearcase.

I have tested with 1.6.9 on a dynamic view on clearcase.