258 	compflags[sp->ts_complen + 1] = NUL;  in can_be_compound()
260 	compflags[sp->ts_complen] = NUL;  in can_be_compound()
413     for (p = p_sps; *p != NUL; )  in spell_check_sps()
422 	    if (*s != NUL && !VIM_ISDIGIT(*s))  in spell_check_sps()
482     if (*curwin->w_s->b_p_spl == NUL)  in spell_suggest()
518 	while (*p != NUL && !spell_iswordp_nmw(p, curwin))  in spell_suggest()
779     if (*badptr == NUL)  in spell_find_suggest()
798     su->su_fbadword[su->su_badlen] = NUL;  in spell_find_suggest()
847     for (p = sps_copy; *p != NUL; )  in spell_find_suggest()
950 	*p++ = NUL;  in spell_suggest_file()
956 	    p[len] = NUL;  in spell_suggest_file()
1100 	su->su_fbadword[len] = NUL;  in suggest_try_special()
1184 	fword[n] = NUL;  in suggest_try_change()
1382 		    tword[sp->ts_twordlen] = NUL;  in suggest_trie_walk()
1409 	    fword_ends = (fword[sp->ts_fidx] == NUL  in suggest_trie_walk()
1413 	    tword[sp->ts_twordlen] = NUL;  in suggest_trie_walk()
1470 			preword[sp->ts_prewordlen] = NUL;  in suggest_trie_walk()
1502 		    compflags[sp->ts_complen + 1] = NUL;  in suggest_trie_walk()
1515 			while (*skiptowhite(p) != NUL)  in suggest_trie_walk()
1622 		    if (!spell_iswordp(p, curwin) && *preword != NUL)  in suggest_trie_walk()
1712 		    compflags[sp->ts_complen + 1] = NUL;  in suggest_trie_walk()
1730 		    compflags[sp->ts_complen] = NUL;  in suggest_trie_walk()
1747 			while (*skiptowhite(p) != NUL)  in suggest_trie_walk()
1799 				&& fword[sp->ts_fidx] != NUL  in suggest_trie_walk()
1811 				preword[sp->ts_prewordlen] = NUL;  in suggest_trie_walk()
1869 	    if (fword[sp->ts_fidx] == NUL && sp->ts_tcharlen == 0)  in suggest_trie_walk()
2052 	    if (fword[sp->ts_fidx] != NUL  in suggest_trie_walk()
2112 		if (byts[n + sp->ts_curi] != NUL)  in suggest_trie_walk()
2196 	    if (c == NUL)  in suggest_trie_walk()
2217 		if (p[n] == NUL)  in suggest_trie_walk()
2218 		    c2 = NUL;  in suggest_trie_walk()
2226 		if (p[1] == NUL)  in suggest_trie_walk()
2227 		    c2 = NUL;  in suggest_trie_walk()
2235 	    if (c2 == NUL)  in suggest_trie_walk()
2250 	    if (c2 != NUL && TRY_DEEPER(su, stack, depth, SCORE_SWAP))  in suggest_trie_walk()
2332 	    if (c == c3 || c3 == NUL)  in suggest_trie_walk()
2703 	*kword = NUL;  in find_keepcap_word()
2721 	if (fword[fwordidx[depth]] == NUL)  in find_keepcap_word()
2727 		kword[kwordlen[depth]] = NUL;  in find_keepcap_word()
2818     *kword = NUL;  in find_keepcap_word()
3021 					 && *skiptowhite(stp->st_word) == NUL)  in stp_sal_score()
3022 	    for (p = fword; *(p = skiptowhite(p)) != NUL; )  in stp_sal_score()
3219     while (*nrline != NUL)  in add_sound_suggest()
3234 	    if (wordcount == orgnr && byts[n + 1] == NUL)  in add_sound_suggest()
3237 	    if (byts[n + 1] == NUL)  in add_sound_suggest()
3241 	    for ( ; byts[n + i] == NUL; ++i)  in add_sound_suggest()
3262 	theword[wlen] = NUL;  in add_sound_suggest()
3265 	for (; i <= byts[n] && byts[n + i] == NUL; ++i)  in add_sound_suggest()
3382 	if (byts[arridx] == NUL)  in soundfold_find()
3384 	    if (c == NUL)  in soundfold_find()
3388 	    while (len > 0 && byts[arridx] == NUL)  in soundfold_find()
3399 	if (c == NUL)  in soundfold_find()
3789 	if ((badsound[0] == NUL && goodsound[1] == NUL)  in soundalike_score()
3790 	    || (goodsound[0] == NUL && badsound[1] == NUL))  in soundalike_score()
3793 	if (badsound[0] == NUL || goodsound[0] == NUL)  in soundalike_score()
3798 		|| (badsound[1] != NUL  in soundalike_score()
3799 		    && goodsound[1] != NUL  in soundalike_score()
3835     while (*pl == *ps && *pl != NUL)  in soundalike_score()
3868 		if (*pl2 == NUL)	// reached the end  in soundalike_score()
3917 	    if (*pl == NUL)  in soundalike_score()
3927 		    if (*pl2 == NUL)	// reached the end  in soundalike_score()
3947 		if (*pl2 == NUL)	// reached the end  in soundalike_score()
4020 	for (p = badword, badlen = 0; *p != NUL; )  in spell_edit_score()
4023 	for (p = goodword, goodlen = 0; *p != NUL; )  in spell_edit_score()
4169 	    if (bc == NUL)	// both words end  in spell_edit_score_limit()
4179 	if (gc == NUL)    // goodword ends, delete badword chars  in spell_edit_score_limit()
4185 	    } while (badword[++bi] != NUL);  in spell_edit_score_limit()
4188 	else if (bc == NUL) // badword ends, insert badword chars  in spell_edit_score_limit()
4194 	    } while (goodword[++gi] != NUL);  in spell_edit_score_limit()
4217 			    if (goodword[gi2] == NUL)  in spell_edit_score_limit()
4323     for (p = badword; *p != NUL; )  in spell_edit_score_limit_w()
4327     for (p = goodword; *p != NUL; )  in spell_edit_score_limit_w()
4354 	    if (bc == NUL)	// both words end  in spell_edit_score_limit_w()
4364 	if (gc == NUL)    // goodword ends, delete badword chars  in spell_edit_score_limit_w()
4370 	    } while (wbadword[++bi] != NUL);  in spell_edit_score_limit_w()
4373 	else if (bc == NUL) // badword ends, insert badword chars  in spell_edit_score_limit_w()
4379 	    } while (wgoodword[++gi] != NUL);  in spell_edit_score_limit_w()
4402 			    if (wgoodword[gi2] == NUL)  in spell_edit_score_limit_w()