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Re: How to use emacs as a "diff3 -m" compatible merge tool?

From: Tassilo Horn
Subject: Re: How to use emacs as a "diff3 -m" compatible merge tool?
Date: Fri, 10 Jun 2022 18:42:42 +0200
User-agent: mu4e 1.7.26; emacs 29.0.50

Michael Heerdegen <> writes:

Hi Michael,

>> How do I print the merge buffer's contents to stdout?  And how can I
>> influence the exit code? (I could do (kill-emacs my-exit-code) but
>> would be more happy if I could also use the merge command with
>> emacsclient where I obviously don't want to kill emacs.)
> Never did something like this before.  I spent some time trying to
> understand the code in server.el however.  Seems `server-send-string'
> can be used for this.  Maybe search for the occurrences - e.g. in
> `server-edit-abort' (and the rest of server.el).
> The available "options" are explained in the doc of
> `server-process-filter' AFAIU.  I think you are interested in those
> "accepted by the client" - especially -print and -error.

Thanks, I will have a look.  Do I understand it correctly that your
answer is specifically about the emacsclient case?

If so, I'd rather tackle my usual sysadmin work "emacs -Q -l minimal.el
..." use-case first where (kill-emacs my-exit-code) would be ok.  But
how do I print buffer contents to emacs' stdout?


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