Bracketed posting dates were fragile; they worked only if you wrote full
10-character dates. Also some semantics were a bit unclear. Now they
should be robust, and have been documented more clearly. This is a
legacy undocumented Ledger syntax, but it improves compatibility and
might be preferable to the more verbose "date:" tags if you write
posting dates often (as I do).
Internally, bracketed posting dates are no longer considered to be tags.
Journal comment, tag, and posting date parsers have been reworked, all
with doctests. Also the journal parser types generally have been
tightened up and clarified, making it much easier to know how to combine
and run them. There's now
-- | A parser of strings with generic user state, monad and return type.
type StringParser u m a = ParsecT String u m a
-- | A string parser with journal-parsing state.
type JournalParser m a = StringParser JournalContext m a
-- | A journal parser that runs in IO and can throw an error mid-parse.
type ErroringJournalParser a = JournalParser (ExceptT String IO) a
and corresponding convenience functions (and short aliases) for running them.
We now parse account directives, like Ledger's. We don't do anything
with them yet. The default parent account feature must now be spelled
"apply account"/"end apply account".
Since market price amounts didn't contribute to the canonical commodity
styles, they were being reset to the null style. And this propagated to
the reported amounts when -V was in effect, causing much confusion.
Now, market prices contribute to canonicalisation and the expected
styles are preserved even with -V.
cf https://github.com/simonmichael/hledger/issues/131#issuecomment-133545140
Using "hledgerdev" was a hack to help ensure that tests used a fresh
developer build by default. Now they specify "hledger" again, which fits
better with stack. It's up to the tester to make sure the desired
executable is first in PATH or specified with -w. (Note a couple of
tests currently don't obey -w and will always run "hledger", see addons.test).
Amount display styles have been reworked a bit; they are now calculated
after journal parsing, not during it. This allows the fix for #196:
we now search through the amounts until a decimal point is detected,
instead of just looking at the first one; likewise for digit groups.
Digit groups are now implemented with a better type.
Digit group size detection has been improved a little:
1000,000 now gives group sizes [3,4,4,...], not [3,3,...], and
10,000 gives groups sizes [3,3,...] not [3,2,2,..].
(To get [3,2,2,...] you'd use eg 00,00,000.)
There are still some old (or new ?) issues; I don't think we handle
inconsistent decimal points & digit groups too well. But for now all
tests pass.
This change means you can make assertions on a multi-commodity account
balance (asserting one commodity at a time). On the flip side, you can
no longer assert the complete balance of an account (new unexpected
commodities will not be detected.) We might restore that ability later,
using the == syntax.
