void overlay_tree_on_index(struct index_state *istate,
const char *tree_name, const char *prefix);
-char *alias_lookup(const char *alias);
-int split_cmdline(char *cmdline, const char ***argv);
-/* Takes a negative value returned by split_cmdline */
-const char *split_cmdline_strerror(int cmdline_errno);
-
/* setup.c */
struct startup_info {
int have_repository;