On Mon, Sep 23, 2013 at 01:44:23PM -0700, Paul Norman wrote: > > From: Jochen Topf [mailto:joc...@remote.org] > > Sent: Monday, September 23, 2013 6:51 AM > > To: talk@openstreetmap.org > > Subject: Re: [OSM-talk] Who interprets semicolon in tag values? > > > > I finally wrote down what I found out about semicolons in tag values and > > what I think about them. Turns out there isn't much software that > > interprets them and where it does, only in special cases. Thanks to all > > who replied and sorry that I haven't mentioned every case in my blog > > post. > > > > http://blog.jochentopf.com/2013-09-23-semicolons-in-osm-tags.html > > It's worth noting that when two objects are merged in iD it splits the > tag's value into lists at semicolons, merges the lists from the two objects, > > and then turns the resulting list into a semicolon separated list. See > https://github.com/systemed/iD/issues/943. I believe iD is actually the > only editor that attempts to support semicolon lists in tags. JOSM and > P2 emit them, but don't interpret them. > > This of course doesn't avoid contradictory tags like tiger:separated=yes;no > but it at least avoids tiger:separated=yes;no;no;no;yes;no;yes;...
This would be better if semicolons always indicated sets of values, which, as I describe in my blog post, is the wrong assumption. For 'ref' tags this is probably the right behaviour, for about anything else it is wrong. IMHO editors should either do something clever, if they know the specific tag and how it is used, or fall back to forcing the user to make a decision. Jochen -- Jochen Topf joc...@remote.org http://www.jochentopf.com/ +49-721-388298 _______________________________________________ talk mailing list talk@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk
