Eagle - compare and merge changes

Hey guys (and gals of course!)

A friend and I have both worked on the same eagle schematic (each one did it locally on his own laptop) - and ended up accidentally with two different versions, each with different modifications.

I’m looking for some kind of script\method to compare the files, and selectively merge the differences in a way that we can select which version to pick for each inconsistency individually.

I’ve tried googling it - but all I got was answers how to merge finished designs using gerbmerge.

Would really appreciate some help.

Thanks in advance!