On Tuesday, April 1, 2014 12:00:45 PM UTC-5, Robin Bowes wrote:
>
> I suspect duplicate keys are not valid YAML. 
>

Indeed they are not.  The keys of a YAML mapping are required to be unique (
http://www.yaml.org/spec/1.2/spec.html#id2764044).

How a particular YAML processor deals with duplicate mapping keys is 
implementation-defined, but the most likely behaviors are an error message 
and/or choosing one the two values presented for the duplicate key.  I 
don't see how merging the values is even viable.


John

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