474 	    *ss = NUL;  in ExpandOne()
713     for (p = s; *p != NUL; )  in sm_gettail()
856 		retval[j] = NUL;  in addstar()
890 	    retval[len] = NUL;  in addstar()
990     if (*cmd == NUL)  in set_one_cmd_context()
1001     if (*cmd == NUL)  in set_one_cmd_context()
1059     if (*p == NUL && ASCII_ISALNUM(p[-1]))  in set_one_cmd_context()
1099     if ((ea.argt & EX_ARGOPT) && *arg != NUL && STRNCMP(arg, "++", 2) == 0)  in set_one_cmd_context()
1147 	if (*arg == NUL)  in set_one_cmd_context()
1167 		if (p[1] != NUL)  in set_one_cmd_context()
1184     if (!(ea.argt & EX_EXTRA) && *arg != NUL  in set_one_cmd_context()
1202 	    if (*p == '\\' && *(p + 1) != NUL)  in set_one_cmd_context()
1218 	while (*p != NUL)  in set_one_cmd_context()
1224 	    if (c == '\\' && p[1] != NUL)  in set_one_cmd_context()
1244 		while (*p != NUL)  in set_one_cmd_context()
1287 	    for (p = xp->xp_pattern + 1; *p != NUL; ++p)  in set_one_cmd_context()
1290 	    if (*p == NUL)  in set_one_cmd_context()
1302 	    for (p = xp->xp_pattern + 1; *p != NUL && *p != '/'; ++p)  in set_one_cmd_context()
1307 	    if (*p == NUL && p > xp->xp_pattern + 1  in set_one_cmd_context()
1378 	    if (*arg != NUL)  in set_one_cmd_context()
1380 	    if (arg == NULL || *arg == NUL)  in set_one_cmd_context()
1389 	    if (*arg == NUL || !ends_excmd(*arg))  in set_one_cmd_context()
1394 		if (*arg != NUL)  in set_one_cmd_context()
1419 	    while (arg[0] != NUL && arg[0] != delim)  in set_one_cmd_context()
1421 		if (arg[0] == '\\' && arg[1] != NUL)  in set_one_cmd_context()
1425 	    if (arg[0] != NUL)  in set_one_cmd_context()
1438 	    while (arg[0] != NUL && arg[0] != delim)  in set_one_cmd_context()
1440 		if (arg[0] == '\\' && arg[1] != NUL)  in set_one_cmd_context()
1444 	    if (arg[0] != NUL)	// skip delimiter  in set_one_cmd_context()
1448 	    if (arg[0] != NUL)  in set_one_cmd_context()
1464 		    if (*arg == '\\' && arg[1] != NUL)  in set_one_cmd_context()
1503 	    if (*p_wop != NUL)  in set_one_cmd_context()
1630 			else if (*p == '\\' && *(p + 1) != NUL)  in set_one_cmd_context()
1730 	    if (*p == NUL)  in set_one_cmd_context()
1800     int		old_char = NUL;  in set_cmd_context()
1807     str[col] = NUL;  in set_cmd_context()
1994 	if (p_csl[0] != NUL && (options & WILD_IGNORE_COMPLETESLASH) == 0)  in ExpandFromContext()
2002 		while (*ptr != NUL)  in ExpandFromContext()
2022 	if (find_help_tags(*pat == NUL ? (char_u *)"help" : pat,  in ExpandFromContext()
2216 	    if (*str == NUL)	    // skip empty strings  in ExpandGeneric()
2357 	if (*s == NUL)  in expand_shellcmd()
2413 	if (*e != NUL)  in expand_shellcmd()
2501     for (s = retstr; *s != NUL; s = e)  in ExpandUserDefined()
2507 	*e = NUL;  in ExpandUserDefined()
2520 	if (*e != NUL)  in ExpandUserDefined()
2593     while (*path != NUL)  in globpath()
2602 	    if (*buf != NUL && !after_pathsep(buf, buf + STRLEN(buf)))  in globpath()
2743 	upseg[4] = NUL;  in wildmenu_process_key()