emacs删除行尾空格 Posted on 2018-11-19 Edited on 2022-04-24 In external 一般做法 M-x delete-trailing-whitespace M-x whitespace-cleanup 自动化做法 12(add-hook 'before-save-hook 'delete-trailing-whitespace)(add-hook 'before-save-hook 'whitespace-cleanup)