return false;
} else if (c < 0xF0) {
/* 3-byte sequence, U+0800 to U+FFFF
- Note that the surrogate range is U+D800 to U+DFFF
+ Note that the surrogate range is U+D800 to U+DFFF,
+ and that U+FFFE and U+FFFF are illegal characters.
c must be >= 11100000 (which it is)
If c is 11100000, then s[0] must be >= 10100000
If the global parameter utf8_allow_surrogates is false:
If c is 11101101 and s[0] is >= 10100000,
then this is a surrogate and we should fail.
+ If c is 11101111, s[0] is 10111111, and s[1] >= 10111110,
+ then this is an illegal character and we should fail.
s[0] and s[1] must be 10xxxxxx */
len = 1;
if (c == 0xE0 && *s < 0xA0)
return false;
if (!utf8_allow_surrogates && c == 0xED && *s >= 0xA0)
return false;
+ if (c == 0xEF && s[0] == 0xBF && (s+1 >= e || s[1] >= 0xBE))
+ return false;
} else {
/* 4-byte sequence, U+010000 to U+10FFFF
c must be >= 11110000 (which it is) and <= 11110100