Question

We’re using TortoiseSVN to create patches for code review.

We’re running into the scenario that a patch is out for review and then some further work is done on the same files. Is it possible to create a “differential” file between the earlier one and the new one, so that the “combined code” is not reviewed – only what has changed from the first patch?

Answer 1

In the TortoiseSVN documentation on creating patches it says

You can produce separate patches containing changes to different sets of files. Of course, if you create
a patch file, make some more changes to the same files and then create another patch, the second patch
file will include both sets of change

So it makes no mention of creating a patch of a patch. What you could do is create the first patch and then create the second patch (which will contain all the changes) and do a diff on the two using something like WinMerge

Perhaps it is worth asking yourself if this is the best approach? You may want to view all the changes as a whole for the code review.