[Tagging] minus or underscore in attribute values?

[Eugene Alvin Villar]

On Sat, Aug 23, 2014 at 4:42 PM, Richard Z. <ricoz.osm at gmail.com> wrote:

> Hi,
>
> another mapper metnioned to me that it is unusual to have
> attribute values with a minus, like
>   bridge:structure=cable-stayed
>
> On the other hand, it is an apporved proposal - what are the
> opinions on that?
>

Based on previous discussion in past there is no real preference to using
underscores versus hyphens.

Case in point:
http://taginfo.openstreetmap.org/keys/drive_through
versus
http://taginfo.openstreetmap.org/tags/service=drive-through
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