sdiff has been around forever: https://linux.die.net/man/1/sdiff https://linux.die.net/man/1/sdiff It’s not a three-way diff and not highlighted however. (icd

sdiff has been around forever: https://linux.die.net/man/1/sdiff https://linux.die.net/man/1/sdiff It’s not a three-way diff and not highlighted however. (icdiff doesn’t seem to be a three-way diff either.)