I like to use shell-command-on-region for pretty printing a selected region of code with prettier.

After selecting a region, I type C-u M-| and then I use prettier --parser ruby as the shell command. This is working great. :)

Now, I also like to use TRAMP to open a ruby file on a remote system.

Unfortunately, shell-command-on-region does not seem to respect TRAMP. It attempts to execute a shell command on my local machine.

On the other hand, if I invoke shell-command unsing M-!, this executes a command on the remote machine.

Is there a way to make shell-command-on-region work together with TRAMP?

1 Answer 1


shell-command-on-region uses call-process-region, which doesn't support remote execution.

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