IIRC the conventional name for this is unmerge. At least that's what the RFC used. Also the use of split in the name is a bit confusing here as I would have expected such a thing to give:

([qw(apples oranges bananas)],
 [qw(pears berries apricots)]);
[download]

I could also see zip and unzip being used (to highlight the interlacing).

--
perl -pe "s/\b;([st])/'\1/mg"