using account.parent in expressions

[Tavis Ormandy]

I saw someone ask an interesting question on reddit, they wanted an
automated transaction to create a mirror transaction in Budget
for every transaction in Expenses.

Obviously you can just do:

= /^Expenses:/
Budget:$account -1

That sort-of works, but then you have Budget:Expenses:Foo, when only
Budget:Foo was wanted.

No problem, you can do this instead:

= /^Expenses:/
Budget:%(account_base) -1

That works for Expenses:Foo, but not Expenses:Foo:Bar....

The best solution I can think of is...

= /^Expenses:[^:]+$/
Budget:%(account_base) -1
= /^Expenses:[^:]+:[^:]+$/
Budget:%(account.parent.account_base + ":" + account_base) -1
= /^Expenses:[^:]+:[^:]+$/
Budget:%(account.parent.account_base + ":" + account_base) -1
= /^Expenses:[^:]+:[^:]+:[^:]+$/
Budget:%(account.parent.parent.account_base + ":" + account.parent.account_base + ":" + account_base) -1

...etc.

Not very elegant, but I think it should work?

Just thought I'd mention it, parent is mentioned in the docs, but only parent.total :)

Tavis.

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