ZERO WIDTH JOINER U+200D

BlockGeneral Punctuation
CategoryFormat
UTF-80xE2 0x80 0x8D
UTF-160xFF 0xFE 0xD 0x20
UTF-320xFF 0xFE 0x0 0x0 0xD 0x20 0x0 0x0
HTML‍
Pythonu"\u200D"