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magically_setup_emacsclient.html
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<!DOCTYPE html>
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<title>Magically setup emacsclient</title>
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<p>
</p><h1>
Magically setup emacsclient
</h1><p>
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<p>
<span class=page-date> <small>
2019-05-25, updated 2019-08-02 — <a href='journal.html#emacs' class='emacs tagbutton'>emacs</a> <a href='journal.html#tech' class='tech tagbutton'>tech</a>   <a href="blogging_past_and_not_blogging_rant.html">⇦Blogging, past and not blogging rant</a> – <a href="automatic_latex_fragment_toggling_in_org-mode.html">Automatic Latex Fragment Toggling in org-mode⇨</a>
</small> </span>
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<p>
This is a magical way of automatically setting up emacsclient, by <a href="https://en.reddit.com/user/northrupthebandgeek">northrupthebandgeek</a>. If you start emacs for the first time, it will start a server. If the server has already been started, it will delegate to emacsclient.
</p>
<p>
One tiny improvement over the function defined on the <a href="https://en.reddit.com/r/emacs/comments/4586eq/quick_emacs_snippet_to_automatically_use/">reddit post</a>, is that this doesn't guess what is the name of the emacs server file. It instead generates the nam
e in the same ways as done by the server package.
</p>
<div class="org-src-container">
<pre class="src src-emacs-lisp"><span class="org-comment-delimiter">;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;</span>
<span class="org-comment-delimiter">;; </span><span class="org-comment">from: https://en.reddit.com/r/emacs/comments/4586eq/quick_emacs_snippet_to_automatically_use/</span>
<span class="org-comment-delimiter">;;</span>
<span class="org-comment-delimiter">;; </span><span class="org-comment">Automagical EmacsClient functionality</span>
<span class="org-comment-delimiter">;;</span>
<span class="org-comment-delimiter">;; </span><span class="org-comment">Basically, if Emacs is already running, this shunts things over to</span>
<span class="org-comment-delimiter">;; </span><span class="org-comment">the existing Emacs; otherwise, it readies itself to accept said</span>
<span class="org-comment-delimiter">;; </span><span class="org-comment">shunting.</span>
<span class="org-comment-delimiter">;;</span>
<span class="org-comment-delimiter">;; </span><span class="org-comment">This operates by detecting the existence of an Emacs server socket</span>
<span class="org-comment-delimiter">;; </span><span class="org-comment">file. If a socket is found, Emacs will</span>
<span class="org-comment-delimiter">;; </span><span class="org-comment">spin up emacsclient and immediately exit itself. Otherwise, Emacs</span>
<span class="org-comment-delimiter">;; </span><span class="org-comment">will start a new server.</span>
(<span class="org-keyword">defun</span> <span class="org-function-name">server-already-running-p</span> ()
<span class="org-doc">"Is Emacs already running?</span>
<span class="org-doc">Gets name based on server-force-delete."</span>
(<span class="org-keyword">let</span> ((file (expand-file-name
server-name
(<span class="org-keyword">if</span> server-use-tcp
server-auth-dir
server-socket-dir))))
(file-exists-p file)))
(<span class="org-keyword">defun</span> <span class="org-function-name">server-shunt</span> ()
<span class="org-doc">"Shunts to emacsclient"</span>
(<span class="org-keyword">let</span> ((args (append '(<span class="org-string">"emacsclient"</span> <span class="org-string">"-a"</span> <span class="org-string">"\"\""</span> <span class="org-string">"-c"</span> <span class="org-string">"-n"</span>)
(cdr command-line-args))))
(shell-command (substring (format <span class="org-string">"%S"</span> args) 1 -1))
(kill-emacs)))
(<span class="org-keyword">unless</span> (<span class="org-keyword">featurep</span> '<span class="org-constant">server</span>)
(<span class="org-keyword">unless</span> (boundp 'server-process)
(<span class="org-keyword">require</span> '<span class="org-constant">server</span>)
(<span class="org-keyword">if</span> (server-already-running-p) (server-shunt) (server-start))))
<span class="org-comment-delimiter">;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;</span>
</pre>
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<div id="postamble" class="status">
<p class="author">Author: Ivan Tadeu Ferreira Antunes Filho</p>
<p class="date">Date: 2022-07-23 Sat 05:11</p>
<p class="author">Github: <a href="https://github.com/itf/">github.com/itf</a></p>
<p class="creator">Made with <a href="https://www.gnu.org/software/emacs/">Emacs</a> 27.1 (<a href="https://orgmode.org">Org</a> mode 9.3) and <a href="https://github.com/itf/org-export-head">Org export head</a> </p>
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