$ git revert -m 1 M
-After the develpers of the side branch fixes their mistakes, the history
+After the developers of the side branch fix their mistakes, the history
may look like this:
---o---o---o---M---x---x---W---x
/ \ /
---A---B A'--B'--C'
-where Y is the revert of W, A' and B'are rerolled A and B, and there may
+where Y is the revert of W, A' and B' are rerolled A and B, and there may
also be a further fix-up C' on the side branch. "diff Y^..Y" is similar
to "diff -R W^..W" (which in turn means it is similar to "diff M^..M"),
and "diff A'^..C'" by definition would be similar but different from that,