I am using fugitive.vim's :Gdiff. I would like to get the diff between the head and the common ancestor and between merge and the common ancestor. I am using instructions from here Show base in fugitive.vim conflict diff, to get the following:
+---------------------------------------+
| common ancestor (:1) |
+-----------+--------------+------------+
| | | |
| HEAD (:2) | working copy | merge (:3) |
| | | |
+-----------+--------------+------------+
However I would like to also see the diff between (:2) and (:1) and between (:3) and (:1)