oh-my-git/levels/time-machine/branches
2020-12-22 17:04:01 +01:00

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title = Branching out
cards = checkout commit-auto merge reset-hard
[description]
You can use these little blue labels to give names to different timelines! This makes it easier to remember what happened where.
One of your colleagues messed up here - can you help reordering the branches correctly using the "reset" card?
When you do commits or merges while you're on a branch, the branch will grow with you. Try that while you eat that donut.
Finally, merge all timelines together, in a way so that the "main" branch points to the result. That's base reality!
[setup]
echo "A friendly old lady.
Sells delicious baguettes." > mary
echo "A rebellious teenager.
Sells good coffee." > larry
echo "A snail. Literally a snail.
Sells donuts with an unspecified, slimy filling." > gary
echo "You do not have a baguette.
You do not have coffee.
You do not have a donut." > you
git add .
git commit -m "The Beginning"
git checkout -b coffee
echo "You have a baguette.
You do not have coffee.
You do not have a donut." > you
git add .
git commit -m "You buy a baguette"
echo "You ate a baguette.
You do not have coffee.
You do not have a donut." > you
git add .
git commit -m "You eat the baguette"
git checkout -b baguette main
echo "You do not have a baguette.
You have coffee.
You do not have a donut." > you
git add .
git commit -m "You buy some coffee"
echo "You do not have a baguette.
You drank coffee.
You do not have a donut." > you
git add .
git commit -m "You drink the coffee"
git checkout -b donut main
echo "You do not have a baguette.
You do not have coffee.
You have a donut." > you
git add .
git commit -m "You buy a donut"
git checkout --detach main
[win]
# Did you eat a baguette on the main branch?
git show main:you | grep "You ate.*baguette"
# Did you drink a coffee on the main branch?
git show main:you | grep "You drank.*coffee"
# Did you eat a donut on the main branch?
git show main:you | grep "You ate.*donut"
[actions]
test "$(git rev-parse HEAD^)" = "$(git rev-parse donut)" && hint "Ooops, your branch ref is still on the old commit."
[congrats]
Nice! It's often convenient to stay on branches most of the time!