153 				    && *get_vim_var_str(VV_OPTION_TYPE) == NUL)  in trigger_optionsset_string()
695 	if (T_NAME[0] == NUL)  in did_set_string_option()
729 	if ((opt_flags & OPT_LOCAL) && *bkc == NUL)  in did_set_string_option()
799 	if (**varp == NUL || fill_culopt_flags(*varp, curwin) != OK)  in did_set_string_option()
813 	for (s = p_hlg; *s != NUL; s += 3)  in did_set_string_option()
815 	    if (s[1] == NUL || ((s[2] != ',' || s[3] == NUL) && s[2] != NUL))  in did_set_string_option()
820 	    if (s[2] == NUL)  in did_set_string_option()
944 	if (*p_wak == NUL  in did_set_string_option()
1022 	    if (varp == &p_enc && *curbuf->b_p_keymap != NUL)  in did_set_string_option()
1029 	    if (((varp == &p_enc && *p_tenc != NUL) || varp == &p_tenc))  in did_set_string_option()
1061 	    for (s = p_penc; *s != NUL; s++)  in did_set_string_option()
1105 	    if (*curbuf->b_p_keymap != NUL)  in did_set_string_option()
1164 	    if (*p_ffs == NUL)  in did_set_string_option()
1183 			      *curbuf->b_p_cm == NUL ? p_cm : curbuf->b_p_cm);  in did_set_string_option()
1201 	    if (*p_cm == NUL)  in did_set_string_option()
1220 	    if ((opt_flags & OPT_LOCAL) && *oldval == NUL)  in did_set_string_option()
1224 	    if (*curbuf->b_p_cm == NUL)  in did_set_string_option()
1238 		    if (buf != curbuf && *buf->b_p_cm == NUL)  in did_set_string_option()
1250 	    for (p = *varp; *p != NUL; ++p)  in did_set_string_option()
1255 		if (*p != NUL)  in did_set_string_option()
1257 		if (*p != NUL)  in did_set_string_option()
1259 		if (*p != NUL)  in did_set_string_option()
1264 		if (x2 != ':' || x3 == -1 || (*p != NUL && *p != ','))  in did_set_string_option()
1269 		if (*p == NUL)  in did_set_string_option()
1276 	    for (p = *varp; *p != NUL; p += 4)  in did_set_string_option()
1278 		if (p[1] != ':' || p[2] == NUL || (p[3] != NUL && p[3] != ','))  in did_set_string_option()
1283 		if (p[3] == NUL)  in did_set_string_option()
1304 	    if (*s++ == NUL)  in did_set_string_option()
1306 	    else if (*s == ',' || *s == NUL)  in did_set_string_option()
1312 		if (*s == '\\' && s[1] != NUL)  in did_set_string_option()
1364 	if (*p_vfile != NUL && verbose_open() == FAIL)  in did_set_string_option()
1480 	    if (*T_BE == NUL)  in did_set_string_option()
1665 	if (*p_sel == NUL  in did_set_string_option()
1771 	if (**varp != NUL && STRCMP("camel", *varp) != 0)  in did_set_string_option()
1856 	    if (*++s != NUL && *s != ',' && *s != ' ')  in did_set_string_option()
1863 			if (*s == '\\' && s[1] != NUL)  in did_set_string_option()
1973 	    if (*p_bs > '3' || p_bs[1] != NUL)  in did_set_string_option()
2001 	if ((opt_flags & OPT_LOCAL) && *p == NUL)  in did_set_string_option()
2004 	else if (*p == NUL  in did_set_string_option()
2030 		|| *curwin->w_p_fdm == NUL)  in did_set_string_option()
2053 	else if (p == *varp || p[1] == NUL)  in did_set_string_option()
2061 	if (**varp != NUL && strstr((char *)*varp, "%s") == NULL)  in did_set_string_option()
2096 	if ((opt_flags & OPT_LOCAL) && *ve == NUL)  in did_set_string_option()
2119 	    while (*p != NUL)  in did_set_string_option()
2122 			|| p[1] == NUL  in did_set_string_option()
2124 			|| (p[2] != NUL && p[2] != ','))  in did_set_string_option()
2129 		else if (p[2] == NUL)  in did_set_string_option()
2190 	if (*curwin->w_p_twk != NUL  in did_set_string_option()
2197 	if (*curwin->w_p_tws != NUL)  in did_set_string_option()
2202 		    || *skipdigits(p + 1) != NUL)  in did_set_string_option()
2471 	    for (p = q; *p != NUL; ++p)  in did_set_string_option()
2486 	if (*p_mouse == NUL)  in did_set_string_option()
2563 		    && ((list && val[len] == ',') || val[len] == NUL))  in opt_strings_flags()