contrib/libedit/refresh.c

544 	wchar_t *ofd, *ols, *oe, *nfd, *nls, *ne;
554 	ofd = o;
566 	while (ofd < o) {
589 	if (*ofd == '\0' && *nfd == '\0') {
596 	while ((o > ofd) && (n > nfd) && (*--o == *--n))
610          * case 1: insert: scan from nfd to nls looking for *ofd
612 	if (*ofd) {
613 		for (c = *ofd, n = nfd; n < nls; n++) {
615 				for (o = ofd, p = n;
627 					osb = ofd;
634          * case 2: delete: scan from ofd to ols looking for *nfd
637 		for (c = *nfd, o = ofd; o < ols; o++) {
648 				    (2 * (p - o) > o - ofd)) {
674 	fx = (int)((nsb - nfd) - (osb - ofd));
692 		if ((ols - ofd) < (nls - nfd)) {
708 		if ((ols - ofd) > (nls - nfd)) {
728 	fx = (int)((nsb - nfd) - (osb - ofd));
732 	ELRE_DEBUG(1, (__F, "ofd %td, osb %td, ose %td, ols %td, oe %td\n",
733 		ofd - old, osb - old, ose - old, ols - old, oe - old));
743 	re_printstr(el, "old-ofd", old, ofd);
745 	re_printstr(el, "ofd-osb", ofd, osb);
765          * /old                  /ofd    /osb               /ose    /ols     /oe
773          * nsb, and the chars between ofd and osb, and is thus the number of
782          * net amount ((nsb-nfd) - (osb-ofd)) won't push the last useful
825 				re_insert(el, old, (int)(ofd - old),
834 			re__strncopy(ofd + fx, nfd + fx, len);
839 			re__strncopy(ofd, nfd, len);
847 		    (__F, "first diff delete at %td...\r\n", ofd - old));
851 		terminal_move_to_char(el, (int)(ofd - old));
865 				re_delete(el, old, (int)(ofd - old),
873 			re__strncopy(ofd, nfd, len);
931 	if ((nsb != nfd) && (osb - ofd) <= (nsb - nfd) && (fx == 0)) {
946 			fx = (int)((nsb - nfd) - (osb - ofd));
954 				re_insert(el, old, (int)(ofd - old),
963 			re__strncopy(ofd + fx, nfd + fx, len);
968 			re__strncopy(ofd, nfd, len);