Compute a difference between a tree and the index.
int git_diff_index_to_tree(git_repository *repo, const git_diff_options *opts, git_tree *old_tree, git_diff_list **diff);
In
repo
The repository containing the tree and index.
In
opts
Structure with options to influence diff or NULL for defaults.
In
old_tree
A git_tree object to diff from.
In
diff
A pointer to a git_diff_list pointer that will be allocated.
