When you select Min Nan (Bân-lâm-gú / Hō-ló-oē) from the language list at https://www.wikipedia.org, the text at the right of the search box says "ZH-MIN-NAN". This is a fake code that we use in the Wikimedia universe for Min Nan. (See T30442 for some details.)
The correct ISO code for this language is nan, so the box should show "NAN" when Min Nan is selected.


