id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
8354	Supplementary characters out of the Unicode BMP	verdy_p	team	"I have found some intriguating data on the node for Paris, France : it contains a name:got entry for the name written in the Gottic script and language.
However this script can only be written with characters out of the Unicode BMP, in fact they are all in the SMP (1st supplementary multilingual plane).
JOSM then does not validate this data and parses it as an overlong string despite it is short (𐍀𐌰𐍂𐌹𐍃 according to the name of the Wikipedia article).
Well JOSM cannot display this name due to the current lack of support for rendering this script.
But its vlidator shoul not say that the key value is overlong (?).
In fact I cannot even copy-paste the name to replace it and fix the issue reported (JOSM does not want any presence of surrogates (in D800..DFFF), even if they are correctly paired in the data to paste 

OSM node id: 17807753"	defect	closed	normal		Core		duplicate