<p>LGTM.</p>

<blockquote>
<p>dialogs_show_msgbox() in create_config_dir() are for the default directory only, and thus do not require conversion.</p>
</blockquote>

<p>AFAICT they do, in case the default directories (<code>HOME</code> or <code>XDG_CONFIG_HOME</code>) contain bytes that would result in an invalid conversion (basically, non-ASCII stuff when locale encoding isn't UTF-8).</p>

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