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mikesorae/hankaku.rb

Created March 16, 2014 17:33
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全角カナ→半角カナ
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hankaku.rb
require 'nkf'
# 既存の半角は維持しつつ全角カナを半角に変換
ARGF.each do |line|
# -xを付けないと既存の半角カナが全角になるぽい
puts NKF.nkf('-xw -Z4', line)
end
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