Template:Infobox language/codelist
Usage
{{Infobox language/codelist|code=abc}}→ abc{{Infobox language/codelist|abc}}→ abc{{Infobox language/codelist|abc|def}}→ abc – def{{Infobox language/codelist}}→ (blank returns blank)
{{Infobox language/codelist|code=abc}} → abc{{Infobox language/codelist|abc}} → abc{{Infobox language/codelist|abc|def}} → abc – def{{Infobox language/codelist}} → (blank returns blank)