----------------
* Prepare `struct diff_options` to record the set of diff options, and
- then call `diff_setup()` to initialize this structure. This sets up
- the vanilla default.
+ then call `repo_diff_setup()` to initialize this structure. This
+ sets up the vanilla default.
* Fill in the options structure to specify desired output format, rename
detection, etc. `diff_opt_parse()` can be used to parse options given