How to append custom completion to ConfD command redirection

[cohult]

You want to use the clispec, addPipeFlags, and pipeCmds.
I believe this post from 4 years ago is close enough for what you want to do:

Collect input from user

Hi lynn, A filter, e.g. a CLI show | select statement, a NETCONF, JSON-RPC, MAAPI query etc. is something that is transformed to a filter that the ConfD core engine understands. You want to get this “filter” that ConfD use and pre-filter in your data provider application, but there is no API to pass the “filter” to your data provider in ConfD. So if you absolutely cannot live with the ConfD core engine doing the filtering for you, but must pass a filter to your data provider application to do…