hugo-theme-relearn/layouts/partials/sidebar/element/languageswitcher.html

{{- $icon := .element.icon | default "language" }}
{{- if and $icon (not (findRE ".*?\\bfa-\\w.*?" $icon)) }}
  {{- $icon = printf "fa-fw fas fa-%s" $icon }}
{{- end }}
			<li class="R-languageswitcher">
              <div class="padding menu-control">
                <i class="{{ $icon }}"></i>
                <span>&nbsp;</span>
                <div class="control-style">
                  <label class="a11y-only" for="R-select-language">{{ T "Language" }}</label>
                  <select id="R-select-language" onchange="location = this.querySelector( `#R-select-language-${this.value}` ).dataset.url;">
                    {{- $pageLang := .page.Language.Lang }}
                    {{- range .page.AllTranslations }}
                    <option id="R-select-language-{{ .Language.Lang }}" value="{{ .Language.Lang }}" data-url="{{ partial "permalink.gotmpl" (dict "to" .) }}" lang="{{ .Language.LanguageCode }}"{{ if eq $pageLang .Language.Lang }} selected{{ end }}>{{ .Language.LanguageName }}</option>
                    {{- end }}
                  </select>
                </div>
                <div class="clear"></div>
              </div>
            </li>