+Tree commands
+~~~~~~~~~~~~~
+TIG_TREE_CMD::
+ The command used for the tree view. By default, git-ls-tree(1) is
+ used. The commands should expect first the commit ID and second
+ a path.
+
+TIG_BLOB_CMD::
+ The command used for the blob view. By default, git-cat-file(1) is
+ used. The command gets the blob ID.
+