Is it possible to send a command to Emacs from an inferior process? For my particular use-case, I would like to instruct Emacs to run the command inferior-ess-r-reload-hook (part of the ESS package) from an R session (an interactive programming language) that was launched as a subprocess of Emacs.

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    emacs.stackexchange.com/a/54161/2370 is your answer. Maybe, you can use the system command from R. – Tobias Feb 19 '20 at 16:07
  • I think that the answer in emacs.stackexchange.com/a/54161/2370 is specific to the Emacs server, correct? – dpritch Feb 19 '20 at 18:46
  • You can use any Emacs as server with server-start. You can even give the server the name of the R session and tell R to contact that specific server. – Tobias Feb 19 '20 at 18:54

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