[augeas-devel] Subtree size

[Francis Giraldeau]

Hi, 

I wanted to know the size of the augeas tree to calculate the memory
impact of adding indexes to tree nodes, and no function was existing for
this. aug_get is returning the size of the node set match by PATH, but
this is not the size of the tree i.e. it's not recursive. 

I would propose the attached patch to add this capability to the API. I
find that it could be useful also for sanity check in other
applications, like in a GUI, when a duplicated model must stay in sync
with the augeas tree. 

Cheer, 

Francis
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