8 static void s_read(rctx_t *r)
10 wchar_t *s = r->opaque;
11 if (!s[r->l]) r->c = -1;
12 else r->c = s[r->l++];
15 int vswscanf(const wchar_t *s, const wchar_t *fmt, va_list ap)
17 rctx_t r = { s_read, (void *)s, 1, iswspace };
18 return __scanf(&r, fmt, ap);