- if (*p == ']') p++, scanset[1+']'] = 1-invert;
- for (; *p && *p != ']'; p++) {
- if (*p=='-' && p[1] != ']')
+ else if (*p == ']') p++, scanset[1+']'] = 1-invert;
+ for (; *p != ']'; p++) {
+ if (!*p) goto fmt_fail;
+ if (*p=='-' && p[1] && p[1] != ']')