I copy .emacs as emacs-bruce Please try emacs-bruce  in the attachment. Thanks, :-) On 2022/7/13 下午7:43, Eli Zaretskii wrote: >> Cc: 55870@debbugs.gnu.org >> Date: Wed, 13 Jul 2022 11:01:55 +0800 >> From: Bruce via "Bug reports for GNU Emacs, >> the Swiss army knife of text editors" >> >> > Can you reproduce the problem in a more recent version of Emacs?  26.3 >> > is several years old. >> >> I reproduce the problem in emacs 28.1. Please refer to the attachments. > After you visit the file, what does Emacs say if you type > > M-: buffer-file-coding-system RET > > Also, the image you show says in the mode line > > Top of 219k (1,0) 10:32xxx 0.92 > > which is not what I'd expect from "emacs -Q". So I think there are > some local changes or customizations in your Emacs that perhaps are > part of the issue somehow. Please tell more about this build of Emacs > and how you invoke it.