Set

Original expression

-[\u4501-\uFEFE] Copy

Normalized

[\u0000-\u4500\uFEFF-\u{10FFFF}] Copy

Perl

[\x00-\x{4500}\x{FEFF}-\x{10FFFF}] Copy

Complemetary

Characters (1066498)

• U+0000
• ...
• 䔀 U+4500
•  U+FEFF
• ...
• 􏿿 U+10FFFF