[Tagging] Removing name_1 and alt_name_1 from Wiki

Gerd Petermann GPetermann_muenchen at hotmail.com
Wed Jan 20 07:50:08 UTC 2016

I don't think that the meaning really depends on the position. My understanding is that the

complete value (e.g. "80||" ) is parsed by splitting it into separate strings at each pipe symbol.

Result: three strings: "80" , "",""

The value "|80|" also gives three strings: "","80",""

Another point is that an empty value means "use the default", which can

only make sense in special cases  like this.


Von: Colin Smale <colin.smale at xs4all.nl>
Gesendet: Mittwoch, 20. Januar 2016 08:23
An: Tag discussion, strategy and related tools
Betreff: Re: [Tagging] Removing name_1 and alt_name_1 from Wiki

I meant that there is a value missing "between the pipes", which at a slightly higher semantic level can mean "use the default". A definition which varies according to position doesn't feel well-formed to me.


On 2016-01-20 08:10, Gerd Petermann wrote:

Colin Smale wrote
The "lanes" tag family uses a different delimiter ("|"), sometimes
together with a semicolon to make a kind of 2-d array. A double pipe
("||") indicates a missing value there. Wouldn't it be nice if we were

That is new to me. My understanding of a double pipe is that described here:
Proposed features/lanes General Extension - OpenStreetMap Wiki<http://wiki.openstreetmap.org/wiki/Proposed_features/lanes_General_Extension#Default_values>
A simple, straightforward extension of existing tags to specify properties not only for a way as whole but for the lanes of the way instead. Based on this general ...

which indicates that a double pipe means one or two default values,
depending on the position.
At the end of the value, it means two default values.


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