One of the recent changes introduced that refactorings might contain many empty diffs in addition to the relevant ones, see http://files.schlitt.info/tmp/diff_issues.patch.
To reproduce this diff do the following:
src/main/Qafoo/ChangeTrack/Analyzer/Vcs/GitCheckout.php -> src/main/Qafoo/ChangeTrack/Analyzer/Checkout/GitCheckout.php
refactor fix-class-names src/ test/ > diff_issues.patch
Btw. the intended changes do not occur in the diff at all.
@tomphp: I guess you are the right one to ping for a potential fix?
@tobyS I thinkt this should be pretty straight forward to fix, I'll take a look at it tomorrow.
This has been fixed in the PatchBuilder library, simply run composer update and the empty diffs should go away.
Fixed #54: Updated to most recent version of tomphp/patch-builder.
Thanks to @tomphp for fixing.