Support for multiple account types for an account placeholder

[Derek Atkins]

<marcus.wolschon at googlemail.com> writes:

> I recon it would be easier to add an account-type "placeholder" that is
> not restricted in the type of children it can have.
> Any comment on this?

Well, we already have one account of this type, called 'root'.  But
it's not in the UI and can only be a top-level account.

Adding new account types is... challenging...  Mostly it's a
problem because of backwards compatibility..  You need to make sure
that you add the logic for the new account well before you add the
code to support using it.

> Marcus

-derek

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       Derek Atkins, SB '93 MIT EE, SM '95 MIT Media Laboratory
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