elisp: call command on current file

Question

I want to set a key in emacs to perform a shell command on the file in the buffer, and revert the buffer without prompting. The shell command is: p4 edit \'currentfilename

Answer 1

Maybe using the minor mode "auto-revert-mode" is an option. Just enable it on the current buffer:

M-x "auto-revert-mode"

and always ensure the buffer is saved, before executing an external command.