显示空白字符 whitespace-mode将制表符替换为空格 .emacs: (setq-default indent-tabs-mode nil) remove tabs in an existing file: C-x h M-x untabify does the opposite: M-x tabify相关连接 EmacsWiki/Tabs Are Evil参考文献 EmacsWiki/Show White Space EmcasWiki/No Tabs