<blockquote>
<blockquote>
<p>As a compromise: how about introducing <code>shell_run_once()</code> to the shell's with the current functionality of <code>shell_run()</code> (+ the one introduced in this PR) and moving <code>shell_run()</code> to a function that calls <code>shell_run_once()</code> in an infinite loop?</p>
</blockquote>
<p>At a glance, I have no objection to this.</p>
</blockquote>
<p>See <a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="495653763" data-permission-text="Issue title is private" data-url="https://github.com/RIOT-OS/RIOT/issues/12272" data-hovercard-type="pull_request" data-hovercard-url="/RIOT-OS/RIOT/pull/12272/hovercard" href="https://github.com/RIOT-OS/RIOT/pull/12272">#12272</a> for a demonstrator of what I mean.</p>

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