1249     int		headlen;	// length of head[]  member
1260     pats->headlen = pats->len;  in prepare_pats()
1270 	    pats->headlen = 0;  in prepare_pats()
1272 	    for (pats->headlen = 0; pats->head[pats->headlen] != NUL;  in prepare_pats()
1273 							      ++pats->headlen)  in prepare_pats()
1275 					   pats->head[pats->headlen]) != NULL)  in prepare_pats()
1277 	if (p_tl != 0 && pats->headlen > p_tl)	// adjust for 'taglength'  in prepare_pats()
1278 	    pats->headlen = p_tl;  in prepare_pats()
1795 				&& (findall || orgpat.headlen == 0 || !p_tbs));  in find_tags()
1798       linear = (orgpat.headlen == 0 || !p_tbs || round == 2);  in find_tags()
2260 	    if (orgpat.headlen  in find_tags()
2283 		if (has_re && orgpat.headlen < cmplen)  in find_tags()
2284 		    cmplen = orgpat.headlen;  in find_tags()
2285 		else if (state == TS_LINEAR && orgpat.headlen != cmplen)  in find_tags()
2315 			if (cmplen < orgpat.headlen)  in find_tags()
2317 			else if (cmplen > orgpat.headlen)  in find_tags()