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Diffstat (limited to 'doc/ledger3.texi')
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diff --git a/doc/ledger3.texi b/doc/ledger3.texi index a094d977..45afe1ae 100644 --- a/doc/ledger3.texi +++ b/doc/ledger3.texi @@ -3230,6 +3230,45 @@ A balance assertion has this general form: This simply asserts that after subtracting $20.00 from Assets:Cash, that the resulting total matches $500.00. If not, it is an error. +The assertion has an effect only on the specified commodity. If an account has +multiple commodities, then only the one asserted is verified: + +@smallexample +2012-03-10 KFC New York + Expenses:Food $20.00 + Assets:Cash $-20.00 = $500.00 + +2012-03-11 KFC Montreal + Expenses:Food 15.00 CAD + Assets:Cash -15.00 CAD = $500.00 +@end smallexample + +In this case, the amount in USD of cash (which has not changed) is validated. +Nothing is asserted about the current amount of Canadian dollars in @samp{Asset:Cash}. + +@subsubsection Special assertion value 0 + +The only value that can be asserted without a commodity is @samp{0}. +This results in a cross-commodities assertion, which makes it possible to +assert that an account is totally empty. + +@smallexample +2012-03-09 Fill Wallet + Revenue $20.00 + Revenue 15.00 CAD + Assets:Cash + +2012-03-10 KFC New York + Expenses:Food $20.00 + Assets:Cash $-20.00 + +2012-03-11 KFC Montreal + Expenses:Food 15.00 CAD + Assets:Cash -15.00 CAD = 0 +@end smallexample + +The last transaction will assert that we are out of cash of any sort. + @node Balance assignments, Resetting a balance, Balance assertions, Balance verification @subsection Balance assignments |