- /*
- * While 'sgr0' is the "same" as termcap 'me', there is a compatibility
- * issue. The sgr/sgr0 capabilities include setting/clearing alternate
- * character set mode. A termcap application cannot use sgr, so sgr0
- * strings that reset alternate character set mode will be
- * misinterpreted. Here, we remove those from the more common
- * ISO/ANSI/VT100 entries, which have sgr0 agreeing with sgr.
- */
- if (exit_attribute_mode != 0
- && set_attributes != 0) {
- char *on = set_attribute_9(1);
- char *off = set_attribute_9(0);
- char *tmp;
- size_t i, j, k;
-
- if (similar_sgr(off, exit_attribute_mode)
- && !similar_sgr(off, on)) {
- TR(TRACE_DATABASE, ("adjusting sgr0 : %s", _nc_visbuf(off)));
- FreeIfNeeded(fix_me);
- fix_me = off;
- for (i = 0; off[i] != '\0'; ++i) {
- if (on[i] != off[i]) {
- j = strlen(off);
- k = strlen(on);
- while (j != 0
- && k != 0
- && off[j - 1] == on[k - 1]) {
- --j, --k;
- }
- while (off[j] != '\0') {
- off[i++] = off[j++];
- }
- off[i] = '\0';
- break;
- }
- }
- /* SGR 10 would reset to normal font */
- if ((i = is_csi(off)) != 0
- && off[strlen(off) - 1] == 'm') {
- tmp = skip_zero(off + i);
- if (tmp[0] == '1'
- && skip_zero(tmp + 1) != tmp + 1) {
- i = tmp - off;
- if (off[i - 1] == ';')
- i--;
- j = skip_zero(tmp + 1) - off;
- while (off[j] != '\0') {
- off[i++] = off[j++];
- }
- off[i] = '\0';
- }
- }
- TR(TRACE_DATABASE, ("...adjusted me : %s", _nc_visbuf(fix_me)));
- if (!strcmp(fix_me, exit_attribute_mode)) {
- TR(TRACE_DATABASE, ("...same result, discard"));
- free(fix_me);
- fix_me = 0;