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I can open a file in emacs with this command:

open -a Emacs main.cpp

But when I apply the same command to multiple files

open -a Emacs main.cpp test.cpp

two emacs windows will appear. I would like to open them in the same emacs window, is this possible?

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One window or one instance (one running Emacs application)? –  patrix Jul 20 at 19:50
    
One window, multiple buffers. –  qed Jul 20 at 19:54

1 Answer 1

up vote 2 down vote accepted

Instead of starting Emacs with open you can use emacsclient to send files to an already running Emacs. For this to work you need to start the corresponding server inside emacs by including

(server-start)

in your emacs init file.

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