+ size = SIZE_def;
+ switch (*p++) {
+ case 'h':
+ if (*p == 'h') p++, size = SIZE_hh;
+ else size = SIZE_h;
+ break;
+ case 'l':
+ if (*p == 'l') p++, size = SIZE_ll;
+ else size = SIZE_l;
+ break;
+ case 'j':
+ size = SIZE_ll;
+ break;
+ case 'z':
+ case 't':
+ size = SIZE_l;
+ break;
+ case 'L':
+ size = SIZE_L;
+ break;
+ case 'd': case 'i': case 'o': case 'u': case 'x':
+ case 'a': case 'e': case 'f': case 'g':
+ case 'A': case 'E': case 'F': case 'G': case 'X':
+ case 's': case 'c': case '[':
+ case 'S': case 'C':
+ case 'p': case 'n':
+ p--;
+ break;
+ default:
+ goto fmt_fail;
+ }
+
+ t = *p;
+
+ switch (t) {
+ case 'C':
+ case 'c':
+ if (width < 1) width = 1;
+ case 's':
+ if (size == SIZE_l) t &= ~0x20;
+ case 'd': case 'i': case 'o': case 'u': case 'x':
+ case 'a': case 'e': case 'f': case 'g':
+ case 'A': case 'E': case 'F': case 'G': case 'X':
+ case '[': case 'S':
+ case 'p': case 'n':
+ if (width < 1) width = 0;
+ break;
+ default:
+ goto fmt_fail;
+ }
+
+ shlim(f, width);
+
+ if (t != 'n') {
+ if (shgetc(f) < 0) goto input_fail;
+ shunget(f);
+ }
+
+ switch (t) {
+ case 'n':
+ store_int(dest, size, pos);
+ /* do not increment match count, etc! */
+ continue;
+ case 'C':
+ wcs = dest;
+ st = (mbstate_t){ 0 };
+ while ((c=shgetc(f)) >= 0) {
+ if (readwc(c, &wcs, &st) < 0)
+ goto input_fail;
+ }
+ if (!mbsinit(&st)) goto input_fail;
+ if (shcnt(f) != width) goto match_fail;
+ break;
+ case 'c':
+ if (dest) {
+ s = dest;
+ while ((c=shgetc(f)) >= 0) *s++ = c;
+ } else {
+ while (shgetc(f)>=0);
+ }
+ if (shcnt(f) < width) goto match_fail;
+ break;
+ case '[':
+ s = dest;
+ wcs = dest;
+
+ if (*++p == '^') p++, invert = 1;
+ else invert = 0;
+
+ unsigned char scanset[257];
+ memset(scanset, invert, sizeof scanset);
+
+ scanset[0] = 0;
+ if (*p == '-') p++, scanset[1+'-'] = 1-invert;
+ else if (*p == ']') p++, scanset[1+']'] = 1-invert;
+ for (; *p != ']'; p++) {
+ if (!*p) goto fmt_fail;
+ if (*p=='-' && p[1] && p[1] != ']')
+ for (c=p++[-1]; c<*p; c++)
+ scanset[1+c] = 1-invert;
+ scanset[1+*p] = 1-invert;
+ }
+
+ if (size == SIZE_l) {
+ st = (mbstate_t){0};
+ while (scanset[(c=shgetc(f))+1]) {
+ if (readwc(c, &wcs, &st) < 0)
+ goto input_fail;
+ }
+ if (!mbsinit(&st)) goto input_fail;
+ s = 0;
+ } else if (s) {
+ while (scanset[(c=shgetc(f))+1])
+ *s++ = c;
+ wcs = 0;
+ } else {
+ while (scanset[(c=shgetc(f))+1]);
+ }
+ shunget(f);
+ if (!shcnt(f)) goto match_fail;
+ if (s) *s = 0;
+ if (wcs) *wcs = 0;
+ break;
+ default:
+ shlim(f, 0);
+ while (isspace(shgetc(f)));
+ shunget(f);
+ pos += shcnt(f);
+ shlim(f, width);
+ if (shgetc(f) < 0) goto input_fail;
+ shunget(f);
+ }
+
+ switch (t) {
+ case 'p':
+ case 'X':
+ case 'x':
+ base = 16;
+ goto int_common;
+ case 'o':
+ base = 8;
+ goto int_common;
+ case 'd':
+ case 'u':
+ base = 10;
+ goto int_common;
+ case 'i':
+ base = 0;
+ int_common:
+ x = __intscan(f, base, 0, ULLONG_MAX);
+ if (!shcnt(f)) goto match_fail;
+ if (t=='p' && dest) *(void **)dest = (void *)(uintptr_t)x;
+ else store_int(dest, size, x);
+ break;
+ case 'a': case 'A':
+ case 'e': case 'E':
+ case 'f': case 'F':
+ case 'g': case 'G':
+ y = __floatscan(f, size, 0);
+ if (!shcnt(f)) goto match_fail;
+ if (dest) switch (size) {
+ case SIZE_def:
+ *(float *)dest = y;
+ break;
+ case SIZE_l:
+ *(double *)dest = y;
+ break;
+ case SIZE_L:
+ *(long double *)dest = y;
+ break;
+ }
+ break;
+ case 'S':
+ wcs = dest;
+ st = (mbstate_t){ 0 };
+ while (!isspace(c=shgetc(f)) && c!=EOF) {
+ if (readwc(c, &wcs, &st) < 0)
+ goto input_fail;
+ }
+ shunget(f);
+ if (!mbsinit(&st)) goto input_fail;
+ if (dest) *wcs++ = 0;
+ break;
+ case 's':
+ if (dest) {
+ s = dest;
+ while (!isspace(c=shgetc(f)) && c!=EOF)
+ *s++ = c;
+ *s = 0;
+ } else {
+ while (!isspace(c=shgetc(f)) && c!=EOF);
+ }
+ shunget(f);
+ break;
+ }
+
+ pos += shcnt(f);
+ if (dest) matches++;
+ }
+ if (0) {
+fmt_fail:
+input_fail:
+ if (!matches) matches--;
+ }
+match_fail: