This took me a while to track down. I noticed it while drinking
unpaid potions but didn't expect the issue to be potion-specific.
Affects paying shop bill in addition to examining [former] inventory.
Start with a stack of 3 unpaid potions.
Iu
a - 3 potions of healing (unpaid)
Ix
no used up items
Drink one.
qa
Iu
a - 2 potions of healing (unpaid)
Ix
x - potion of healing
So, far everything's normal. Note that 'x' is an arbitrary letter
used for expended items when shown in inventory style rather than an
inventory letter or menu choice.
Drink another.
qa
Iu
a - a potion of healing (unpaid)
Ix
x - potion of healing
x - potion of healing
Drink the last one.
qa
Iu
no unpaid items
Ix
x - potion of healing
x - potion of healing
x - potion of healing
In 3.4.3, these last two Ix cases would have had single lines of
'x - 2 potions of healing' and 'x - 3 potions of healing', respectively.
After this fix, they will again--unless potion stack 'a' was wielded,
readied as alt-weapon, or quivered.
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