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54 lines
1.6 KiB
Text
54 lines
1.6 KiB
Text
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title = Adding changes step by step
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cards = add commit
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[description]
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The index is really useful, because it allows us to be precise about which changes we want to include in each commit!
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[setup]
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echo "A small, but heavy glass ball. It is not touching the book." > ball
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echo "A thin book, that's standing upright." > book
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echo "A candle, burning with a blue flame." > candle
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git add .
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git commit -m "The beginning"
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[win]
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# Make changes to all three objects!
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test "$(git diff --name-only | wc -l)" -eq 3 || file -f .git/candle-changed && touch .git/candle-changed
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# Only add one of these changes!
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test "$(git diff --cached --name-only | wc -l)" -eq 1 || file -f .git/candle-added && touch .git/candle-added
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# And make a commit.
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COUNT=0
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for commit in $(git cat-file --batch-check='%(objectname) %(objecttype)' --batch-all-objects | grep 'commit$' | cut -f1 -d' '); do
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if test "$(git diff --name-only $commit $commit^ | wc -l)" -eq 1; then
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COUNT=$((COUNT+1))
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fi
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done
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test "$COUNT" -ge 1
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# Make a second commit that only records a single change.
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COUNT=0
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for commit in $(git cat-file --batch-check='%(objectname) %(objecttype)' --batch-all-objects | grep 'commit$' | cut -f1 -d' '); do
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if test "$(git diff --name-only $commit $commit^ | wc -l)" -eq 1; then
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COUNT=$((COUNT+1))
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fi
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done
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test "$COUNT" -ge 2
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# And a third one.
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COUNT=0
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for commit in $(git cat-file --batch-check='%(objectname) %(objecttype)' --batch-all-objects | grep 'commit$' | cut -f1 -d' '); do
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if test "$(git diff --name-only $commit $commit^ | wc -l)" -eq 1; then
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COUNT=$((COUNT+1))
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fi
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done
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test "$COUNT" -ge 3
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