If you want to limit your HTML report to contain classes which have been modified since a previous build (using information from a VCS such as git or hg), then you'd have to build such query on your own and next pass list of files to the <clover-report> task (see <fileset> + <testsources> options).
See also: https://answers.atlassian.com/questions/86543 question.
If you would like to perform a logical or arithmetical operation (such as XOR or subtraction) on coverage data from two different builds, then unfortunately such feature is not available right now. A feature request is reported here https://jira.atlassian.com/browse/CLOV-1024.
Thanks for signing up for Jira Ops! I’m Matt Ryall, leader for the Jira Ops product team at Atlassian. Since this is a brand new product, we’ll be delivering improvements quickly and sharing updates...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs