This file is indented with tabs instead of 4 spaces....提示

IDEA 出現 This file is indented with tabs instead of 4 spaces提示 問題：Intellij IDEA 老出現 This file is indented with tabs instead of 4 spaces提示， 此提示是關於縮進用空格縮進還是tab縮進的問題，隨習慣吧。 解決方法：在settings --> Editor --> Co

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