232     if (curbuf->b_ffname == NULL  in readfile()
247     old_b_ffname = curbuf->b_ffname;  in readfile()
249     using_b_ffname = (fname == curbuf->b_ffname)  in readfile()
250 					      || (sfname == curbuf->b_ffname);  in readfile()
526 					&& (old_b_ffname != curbuf->b_ffname))  in readfile()
605 		|| (using_b_ffname && (old_b_ffname != curbuf->b_ffname))  in readfile()
723 		|| (using_b_ffname && (old_b_ffname != curbuf->b_ffname))  in readfile()
1096 				  && curbuf->b_ffname != NULL  in readfile()
3416 	if (buf->b_sfname != buf->b_ffname)  in shorten_buf_fname()
3418 	p = shorten_fname(buf->b_ffname, dirname);  in shorten_buf_fname()
3425 	    buf->b_fname = buf->b_ffname;  in shorten_buf_fname()
4067     if (buf->b_ffname == NULL  in buf_check_timestamp()
4083 	    && ((stat_res = mch_stat((char *)buf->b_ffname, &st)) < 0  in buf_check_timestamp()
4089 		|| mch_getperm(buf->b_ffname) != buf->b_orig_mode  in buf_check_timestamp()
4107 	    buf_store_time(buf, &st, buf->b_ffname);  in buf_check_timestamp()
4211 						&& vim_fexists(buf->b_ffname))  in buf_check_timestamp()
4296 	if (buf->b_p_udf && buf->b_ffname != NULL)  in buf_check_timestamp()
4398 	    if (readfile(buf->b_ffname, buf->b_fname, (linenr_T)0,  in buf_reload()