Fix last behaviour changes

Conrad Canterford conrad@mail.watersprite.com.au
Thu, 11 Jan 2001 19:45:35 +1100


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OK, last time I had a serious logic error. This change:
- moves the entire chunk of code to a seperate routine for tidyness.
- changes the behaviour so that:
  - ANY time we have one (and only one) zero field, that field is
recalculated (regardless of how many of the fields were edited).
  - when there are two edited fields, and the previous case didn't
trigger, the unchanged field is recalculated.

This has the desirable (from my point of view, at least) feature that
you can now force gnucash to recalculate a field by replacing it with 0
(so, for example, if you change the number of shares, and are not sure
what the new price per share would be, you just enter a 0 in the price
field (and change the value field if necessary)).

Conrad.
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