2446 qf_push_dir(char_u *dirbuf, struct dir_stack_T **stackptr, int is_file_stack)  in qf_push_dir()  argument
2456     ds_new->next = *stackptr;  in qf_push_dir()
2457     *stackptr = ds_new;  in qf_push_dir()
2461 	    || (*stackptr)->next == NULL  in qf_push_dir()
2462 	    || (*stackptr && is_file_stack))  in qf_push_dir()
2463 	(*stackptr)->dirname = vim_strsave(dirbuf);  in qf_push_dir()
2469 	ds_new = (*stackptr)->next;  in qf_push_dir()
2470 	(*stackptr)->dirname = NULL;  in qf_push_dir()
2473 	    vim_free((*stackptr)->dirname);  in qf_push_dir()
2474 	    (*stackptr)->dirname = concat_fnames(ds_new->dirname, dirbuf,  in qf_push_dir()
2476 	    if (mch_isdir((*stackptr)->dirname) == TRUE)  in qf_push_dir()
2483 	while ((*stackptr)->next != ds_new)  in qf_push_dir()
2485 	    ds_ptr = (*stackptr)->next;  in qf_push_dir()
2486 	    (*stackptr)->next = (*stackptr)->next->next;  in qf_push_dir()
2494 	    vim_free((*stackptr)->dirname);  in qf_push_dir()
2495 	    (*stackptr)->dirname = vim_strsave(dirbuf);  in qf_push_dir()
2499     if ((*stackptr)->dirname != NULL)  in qf_push_dir()
2500 	return (*stackptr)->dirname;  in qf_push_dir()
2503 	ds_ptr = *stackptr;  in qf_push_dir()
2504 	*stackptr = (*stackptr)->next;  in qf_push_dir()
2515 qf_pop_dir(struct dir_stack_T **stackptr)  in qf_pop_dir()  argument
2523     if (*stackptr != NULL)  in qf_pop_dir()
2525 	ds_ptr = *stackptr;  in qf_pop_dir()
2526 	*stackptr = (*stackptr)->next;  in qf_pop_dir()
2532     return *stackptr ? (*stackptr)->dirname : NULL;  in qf_pop_dir()
2539 qf_clean_dir_stack(struct dir_stack_T **stackptr)  in qf_clean_dir_stack()  argument
2543     while ((ds_ptr = *stackptr) != NULL)  in qf_clean_dir_stack()
2545 	*stackptr = (*stackptr)->next;  in qf_clean_dir_stack()