mailmap.hon commit prefer "!=" when checking read_in_full() result (61d3633)
   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