JIS X 0208 is a collection of common characters used in Japanese writing, place names, and people's names.
jisx0208 is a Ruby gem that provides a simple way to check if a string contains JIS X 0208 characters.
gem install jisx0208require "jisx0208"
code = JISX0208::Code.new
code.contains_jisx0208_kanji?("亜") # => true
code.contains_jisx0208_kanji?("弌") # => true
code.contains_jisx0208_kanji?("亜X") # => true
code.contains_jisx0208_kanji?("弌X") # => true
