mailmap.hon commit ls-files -k: a directory only can be killed if the index has a non-directory (2eac2a4)
   1#ifndef MAILMAP_H
   2#define MAILMAP_H
   3
   4int read_mailmap(struct string_list *map, char **repo_abbrev);
   5void clear_mailmap(struct string_list *map);
   6
   7int map_user(struct string_list *map,
   8                         const char **email, size_t *emaillen, const char **name, size_t *namelen);
   9
  10#endif