Encoding problem with OSM plugin

[cdavilam]

If you edit OSM data (downloaded or from a saved *.osm file) that contain accented characters, ñ or similar, you get the following error:

process failed. OpenStreetMap server response: Bad Request - Cannot parse valid way from xml string <?xml version="1.0" encoding="UTF-8"?><osm version="0.6" generator="OpenStreetMap server"><way id="23108300" visible="true" timestamp="2010-04-05T10:50:23Z" user="antecessor" version="10" changeset="4919909"><nd ref="248219762"/><nd ref="248219763"/><nd ref="248219764"/><nd ref="248219765"/><nd ref="248219766"/><nd ref="248219767"/><nd ref="248219768"/><nd ref="248219769"/><nd ref="248219770"/><nd ref="248219771"/><nd ref="412472837"/><nd ref="248219772"/><nd ref="248219773"/><nd ref="412472711"/><nd ref="447083532"/><nd ref="685164049"/><nd ref="447083436"/><nd ref="685164046"/><nd ref="248219776"/><nd ref="248219777"/><nd ref="248219778"/><nd ref="248219779"/><tag k="highway" v="primary"/><tag k="lanes" v="2"/><tag k="name" v="Carretera de Cáceres a Villanueva de la Serena"/><tag k="oneway" v="no"/><tag k="ref" v="EX-206"/><tag k="source" v="survey"/><tag k="surface" v="asphalt"/></way></osm>. Fatal error: Input is not proper UTF-8, indicate encoding !.

Data used to reproduce the error can be downloaded with the following bbox: Lat from 39.44089 to 39.45034, Lot from -6.35628 to -6.34617

If you select way with ID 23108300 (primary highway, ref EX-206), way name is displayed correctly (Carretera de Cáceres...) but relation name not (Carretera de Cáceres...). Another member of the same relation can be edited without problems using JOSM.

[springmeyer]

Great tools for detecting encoding and handling invalid chars (even if proper encoding) are:

​http://chardet.feedparser.org/

​http://pypi.python.org/pypi/Unidecode/0.04.1