First class support for multiline environment variables

[javawizard]

I've been working with a lot of projects lately that require me to include PEM-formatted RSA private keys in environment variables. See for example GitHub's documentation on creating a new GitHub App. In order to manage these with Vaulted, I need to be able to add environment variables whose values contain newlines to a vault.

The only way I've found to do this is to vaulted dump the environment, edit the JSON by hand, then vaulted load it back up. That's a pain. It'd be nice if Vaulted had first-class support for that use case.

Possible way to implement this: Add a command like vaulted set <vault> <varname> <value> that preserves newlines in <value>. Bonus points if you can do vaulted set --stdin <vault> <varname> and pipe the value in.