print now always right-aligns the amounts in an entry, even when they
are wider than 12 characters.
If there is a price, it's considered part of the amount for
right-alignment. Maybe it would be nicer to put amounts and prices in
separate columns ? That will get a little complicated, needs more
discussion/design.
Also some cleanup of postingAsLines.
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).
When a transaction posts to two commodities without specifying the
conversion price, we generate a price which makes it balance
(cf http://hledger.org/manual.html#prices).
Until now, these generated prices were always shown with full precision
(all available decimal digits) so that a manual calculation with the
displayed numbers would agree.
If there's just one posting in the commodity being priced, we can use an
exact total price and the precision is no problem.
But if there are multiple postings in the commodity being priced, we
must show the averaged unit price. This can be an irrational number,
which with our current Decimal-based implementation would display an
excessive 255 decimal digits. So in this case we now set the price's
display precision to the sum of the (max) display precisions of the
commodities involved. An example:
hledgerdev -f- print
<<<
1/1
c C 10.00
c C 11.00
d D -320.00
>>>
2015/01/01
c C 10.00 @ D 15.2381
c C 11.00 @ D 15.2381
d D -320.00
>>>=0
There might still be cases where this will show more price decimal
places than necessary. For now, YAGNI.
