I learn to use emacs. When I enter M-x shell , I enter the shell mode, but I don’t know how to exit shell mode. I want to be back to fundamental mode to continue to my editing work. I search this question Emacs switching out of terminal, but when I press C-c o , the input will be treated as a command, so how to exit ?
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The shell will be running in a buffer. You can switch back to the buffer where you were doing your work using
C-x b.