[[chef-dev]] OHAI-115 connundrum

[(Mathieu Sauve-Frankel)]

I'm trying to find a sensible way to close OHAI-115.
'CLI should filter on deeper levels of attributes'

The issue I am having is defining an acceptable filed separator 
for specifying the path to the attribute we want to dump. 

The ticket suggests . as a field separator. This FS may appear in the data, 
making it difficult to parse the path to the desired part of the ohai data.
For example: 

$ ohai network.interfaces.em0.addresses.10.25.10.1 

I've enumrated the separators that have issues below, although this may 
not be a complete list

/ - filesystem paths or device nodes
. - ipv4 addresses
: - mac addresses
:: - ipv6 addresses

My current patch uses // as the FS. You can see the patch here 
http://gist.github.com/180666

I would appreciate any comments or suggestions

Thanks,

-- 
Mathieu Sauve-Frankel