Set

Original expression

-[\u0001-\uD7FF\uE000-\uFFFD\u{10000}-\u{10FFFF}] Copy

Normalized

[\u0000\uD800-\uDFFF\uFFFE-\uFFFF] Copy

Perl

[\x00\x{D800}-\x{DFFF}\x{FFFE}-\x{FFFF}] Copy

Complemetary

Characters (2051)

• U+0000
• � U+D800
• ...
• � U+DFFF
• ￾ U+FFFE
• ￿ U+FFFF