Putting the Macron in Māori: Accented text in R Graphics

This report describes different methods for correctly rendering macrons
in Māori text within R plots. The topics covered will also have
relevance to rendering other special characters in R graphics and
possibly to rendering macrons in other software.

本报告阐述了在 R 绘图环境中准确渲染毛利文长音符号的多种方法。所涉及的主题亦将对 R 图形中其他特殊字符的渲染具有相关性，甚至可能涉及在其他软件中渲染长音符号的实践。