處理R安裝後出現You're using a non-UTF8 locale, therefore only ASCII characters will work.的情況

原文鏈接：https://stackoverflow.com/questions/9689104/installing-r-on-mac-warning-messages-setting-lc-ctype-failed-using-c

1. Open Terminal
2. Write or paste in: defaults write org.R-project.R force.LANG en_US.UTF-8
3. Close Terminal (including any RStudio window)
4. Start R

來源：https://stackoverflow.com/questions/9689104/installing-r-on-mac-warning-messages-setting-lc-ctype-failed-using-c