oh-my-git/levels/bottom-up/puzzle-trees-all-the-way-down/win

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TREES=$(git cat-file --batch-check='%(objectname) %(objecttype)' --batch-all-objects | grep tree | cut -f1 -d" ")
for TREE in $TREES; do
if [ "$(git cat-file -p $TREE | wc -l)" -eq 1 ]; then
if [ "$(git cat-file -p $TREE | cut -f1 | grep tree | wc -l)" -eq 1 ]; then
# So the tree has exactly one child, and it is a tree!
TREE2=$(git cat-file -p $TREE | cut -f1 | grep tree | cut -f3 -d" ")
if [ "$(git cat-file -p $TREE2 | wc -l)" -eq 1 ]; then
if [ "$(git cat-file -p $TREE2 | cut -f1 | grep tree | wc -l)" -eq 1 ]; then
# Same for its child! \o/
exit 0
fi
fi
fi
fi
done
exit 1