The basic register view does not really support transactions in which multiple splits reference the same account very well. The current implementation shows a separate line for each split of the transaction, whereas one line for the entire transaction seems (to me) a better approach.

Consider the following (long-winded) example: suppose I go to
the local computing shop, and buy a number of items for my pc. If I want
to have all details of this transaction, I would create one transaction
with multiple splits:

  Local PC farm:   -- split transaction --:   -300
  expense:         Wallet:                    -300
  power supply:    Computing Expenses:        +50
  motherboard:     Computing Expenses:        +100
  processor:       Computing Expenses:        +150

However, when I view the computing expenses account, I see three
separate lines:

  Local PC farm:   -- split transaction --:   +50
  Local PC farm:   -- split transaction --:   +100
  Local PC farm:   -- split transaction --:   +150

Instead of (what I'd like to see):

  Local PC farm:   -- split transaction --:   +300

However, when I select either one of those three lines and expand the split, the transaction amount is changed to +300:

  Local PC farm:   -- split transaction --:   +50
  Local PC farm:   -- split transaction --:   +300
  expense:         Wallet:                    -300
  power supply:    Computing Expenses:        +50
  motherboard:     Computing Expenses:        +100
  processor:       Computing Expenses:        +150
  Local PC farm:   -- split transaction --:   +150


Also discussed in http://lists.gnucash.org/pipermail/gnucash-user/2006-November/018345.html

When this gets accepted (ie not rejected), I might get around to implementing it myself.