Is it possible to diff 2 files. Say version 1.0 and version 2.0 of a software. Creating a reasonably sized diff. Then diff a patch vs version 2.0 of the software which also includes diffs from version 1.0. So essentially subtract the diff of ver1 ver2 from the diff of patch ver2.
Example I want to diff a patch applied to a soft at its version 1.0 stage, but vs the version 2.0. If I do diff patch vs ver2. The diff is huge because of all the changes from ver1 to ver2. So i want to diff ver1 ver2, then subtract this diff from the diff of patch ver2.
