What version are you running?
1.7.6
What's the URL of the page containing the problem?
Internal
What steps will reproduce the problem?
1. Upload a code review diff with changes to several different files.
2. Revert all changes in a subset of the files.
3. Update the code review with the new diff.
4. On the webpage, go to "Changes between r1:" and the new diff.
5. Observe that the "diff of diffs" for the reverted files are inverted.
What is the expected output? What do you see instead?
Expect the changes to be present in "Diff Revision 1" and showing them being deleted in "Diff Revision 2". However, they are shown completely *absent* from "Diff Revision 1" and show as being *added* in "Diff Revision 2".
What operating system are you using? What browser?
Linux Mint 14, Chrome
Please provide any additional information below.
