xdelta

Update for April 2008:

I started making beta releases for Xdelta-3.x four years ago. There were a lot of bugs then. Now the bug reports are dwindling, so much so that I've had a chance to work on new features, such as one requested by issue 36. Announcing the xdelta3 merge command. Syntax:

xdelta3 merge -m input0 [-m input1 [-m input2 ... ]] inputN output

This command allows you to combine a sequence of deltas, producing a single delta that combines the effect of applying two or more deltas into one. Since I haven't finished testing this feature, the code is only available in subversion. See here and enjoy.