Hi Mark,
I came across an incompletely mapped area that has some dead-end oneways, and mkgmap duly complained. Initially, I "fixed" this with a bogus road that had a FIXME tag, but the original mapper reverted that change. Now I have added fixme=continue to each bogus oneway. I wanted to suppress the dead-end check if the endpoints of the oneway have FIXME or fixme set, but neither Coord nor CoordNode carry any OSM attributes. Where could this be achieved? I would rather not add any mkgmap:dead-end-check=no to the OpenStreetMap repository? The FIXME would be more universal and also show up in validators.
Yes, something like that could be done. Not sure about doing it for FIXME=*, though because if it said FIXME='not sure about road name' or something else that was unrelated to the routing/connectivity of the way then disabling the dead end check would not be appropriate.
I put my foot where my mouth is and implemented this in the OSM parser: if either endpoint of a oneway carries a FIXME or fixme attribute, mkgmap:dead-end-check=false will be added to the way. It is left as an exercise for the reader to port the patch to the MP parser. :-) I tested the patch with --report-dead-ends 1 and 2 and got zero or several oneway warnings, depending on whether FIXME was set on the way endpoints. Best regards, Marko