Since bug 38551 have been resolved, it is _possible_ to have per-language bold/italic button variants. But the only two languages _using_ this are currently English and German. Do we really need to ask language by language, when we've been through all this with the Vector edit toolbar (see e.g. bug 23625, bug 23911, bug 24188 etc.). We already have https://commons.wikimedia.org/wiki/WikiEditor_Toolbar_Icons#List_by_language -- cannot we use that?