Hi Gerd,
I figured out that it would be nice to display all tags of the dead-end oneway, like we do in MultiPolygonRelation, so that my mkgmap wrapper script could filter out any oneway warnings for highway=service.
I am not sure if I got that right. If you want to suppress the dead-end-check for all ways with specific tags, you can do it in the style (add the tag mkgmap:dead-end-check=false to the way)
I do not want to suppress dead-end-checks altogether. I do it on a case-by-case basis, either by adding fixme=continue to the endpoint (this will set mkgmap:dead-end-check=false on the way; I wrote the code to do that), or by filtering out messages. Here is a slightly different example: ... Motorway exit 67 (http://www.openstreetmap.org/?mlat=60.47712&mlon=26.27170&zoom=17) has no motorway! This is for node 1909615887. The message fails to mention the tags of the attached way 181498435 (highway=construction, construction=motorway, ...). I have a file that I pass to "grep -vf" for suppressing known warnings. I would not want to add a suppression for this message as it is now, because it would remain suppressed after the construction is completed and the way gets tagged highway=motorway. If my suppression regexp were something like Motorway exit 67 .*mlat=60\.47712&mlon=26\.27170.*highway=construction then it would no longer suppress the warning if the way is changed to highway=motorway and some map editor breaks something. (Even better than coordinates would be the ID of the highway=motorway_exit node.) Marko