searxng/searx/templates/simple/languages.html

<select class="language" id="language" name="language" tabindex="2">{{- '' -}}
	<option value="all" {% if current_language == 'all' %}selected="selected"{% endif %}>{{ _('Default language') }}</option>
	{%- for lang_id,lang_name,country_name,english_name in language_codes | sort(attribute=1) -%}
	<option value="{{ lang_id }}" {% if lang_id == current_language %}selected="selected"{% endif %}>
		{{- lang_name }} {% if country_name %}({{ country_name }}) {% endif %}- {{ lang_id -}}
	</option>
	{%- endfor -%}
</select>