I got lost on the last example: `(foo (bar))` -> `(foo (novel) (bar))`. The diff that adds `novel` and a pair of parentheses seemed impossible -- wouldn't you also have to delete and re-add `bar`?
Writing this comment it occurs to me that the structural diff doesn't translate to plaintext very well, and thus is not accessible to folks with red-green colorblindness.
Writing this comment it occurs to me that the structural diff doesn't translate to plaintext very well, and thus is not accessible to folks with red-green colorblindness.