How do I remove emoji from string

Question

My problem is to remove emoji from a string, but not CJK (Chinese, Japanese, Korean) characters from a string using regex. I tried to use this regex:

REGEX =         


        

Answer 1

Karol S already provided a solution, but the reason might not be clear:

"\u1F600" is actually "\u1F60" followed by "0":

"\u1F60"    # => "ὠ"
"\u1F600"   # => "ὠ0"

You have to use curly braces for code points above FFFF:

"\u{1F600}" #=> "