On Mon, Aug 5, 2013 at 3:03 PM, Chris Hostetter <hossman_luc...@fucit.org> wrote: > > : > 0xfffe is not a special character -- it is explicitly *not* a character in > : > Unicode at all, it is set asside as "not a character." specifically so > : > that the character 0xfeff can be used as a BOM, and if the BOM is read > : > incorrectly, it will cause an error. > : > : XML doesnt allow control character like this, it defines character as: > > But is that even relevant? I thought FFFE was *not* a control character? > I thought it was completely invaid in Unicode. >
its totally relevant. FFFE is a unicode codepoint, but its a noncharacter. Its just that XML disallows FFFE and FFFF noncharacters, but allows other noncharacters (like 9FFFF) These are "allowed but discouraged": http://www.w3.org/TR/xml11/#charsets
