I’m looking for an accurate list of letters in the Vietnamese alphabet. The list built into Glyphs seems to be incomplete, as do Adobe’s fonts. For example, trying to set Genesis with fonts that support Vietnamese often results in ḿ ṇ ṛ missing. Online lists of the Vietnamese alphabet are often missing these and other letters, like ø. The Scriptsource list of characters for Vietnamese fonts contains many characters not in Vietnamese because it includes complete codepages containing characters used in Vietnam. Is there a reliable list somewhere? Are ḿ ṇ ṛ and ø just errors in old text?