3 way diff?

[codec-abc]

Hi,

Diff newbie here. Assuming I want to build a 3 way-merge tool (1 common ancestor and 2 versions) can this be used to build such a thing? In that case , how one should do it. Maybe diffing both file against the common ancestor and comparing sequence but then conflict don't seem to detect at first glance. If you have any advice about this please feel free to give them 😄