Edit requests of shell script: 2つのcsvファイルの差分を，配列を利用した集合演算を用いて取り出す．

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We released Markdown parser changes on February 24, 2022. There may be some unexpected appearance changes in this update, because this article was posted before the changes.
Please don't forget to check the preview before updating your article.
For more information on the changes, please read this article.