Bob finds the author of a typo

Here we will see how Bob is able to trace who introduced a bug in the novel, in the form of a spelling error.

Lab: Alice

Alice worked for a lot hours today, and although she is exhausted, she also wants to review the state of the book. So she goes to her repo and gets the updates

cd
cd alice/book
git pull origin main

The new chapter written by Bob looks very promising! But Alice notices a problem: John is not living in the lighthouse anymore. So she will help his mate correcting it... but she will inadvertently also introduce another type of error in the sentence:

sed -i "s/the lighthouse/the olt man's home/" chapter-04.md
cat chapter-04.md

Job done, add, commit and push... but she is so tired that the commit message is no specially inspired

git add chapter-04.md
git commit -m "Minor change"
git push origin main

cd ../..

After the weekend, Bob comes back to the old computer continue the development of his chapter

cd
cd bob/book
git pull origin main

When he starts editing the text of chapter four, he realizes there is something odd... a typo in a sentence he doesn't remember to have introduced

cat chapter-04.md | grep "the olt man's home" -C 999

Well... maybe he made a change in the text and doesn't remember it. Or not. He needs to know, so he asks `git` about who wrote each line of the book:

git █████ chapter-04.md \
  | grep -e Alice -e Bob

git blame chapter-04.md \
  | grep -e Alice -e Bob

Ok, mystery solved: so it was a change made by Alice. Bob agrees with the modification, so he just needs to update the wrong word

sed -i "s/the olt/the old/" chapter-04.md
cat chapter-04.md | grep "the old man's home" -C 9999

git add chapter-04.md
git commit -m "Fixed typo"
git push origin main

cd ../..