Using account aliases

[lipp f]

Just noticed that an account alias cannot be used to limit the scope of running a ledger command

I have like this:

alias account_alias=long_account_name

$ ledger reg  -l 'account==account_alias'                          returns nothing

$ ledger reg  -l 'account== long_account_name  '            returns proper register

Is there anyway to make the first command work?

TIA.