Exactly.
If a missing value (i.e. use the default) is not the same as explicitly
having NO value, how do you override the default with "no value"?
--colin
On 2016-01-20 08:50, Gerd Petermann wrote:
> 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.
>
> Gerd
>
> -------------------------
>
> VON: Colin Smale <colin.sm...@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.
>
> //colin
>
> 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
> consistent?
> That is new to me. My understanding of a double pipe is that described here:
> http://wiki.openstreetmap.org/wiki/Proposed_features/lanes_General_Extension#Default_values
>
>
> Proposed features/lanes General Extension - OpenStreetMap Wiki [1]
> wiki.openstreetmap.org
> 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.
>
> Gerd
>
> --
> View this message in context:
> http://gis.19327.n5.nabble.com/Removing-name-1-and-alt-name-1-from-Wiki-tp5864465p5865207.html
> [2]
> Sent from the Tagging mailing list archive at Nabble.com.
>
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