How to find in GIT starting from which revision a given piece of text appeared (or disappeared) in the text of a file?

Question

git

How to find in GIT starting from which revision a given piece of text appeared (or disappeared) in the text of a file?

Answer 1

I'll have to puff with the translation of my answer, but it deserves a green check, it's 146%.

If you know the contents of the line, this is an ideal use case for:
git log -S <search_string> -- path/to/file
which shows you commits which introduce or remove an instance of that string.

Answer 2

git blame - Shows which commit each line was added to. For deleted lines, you will have to look at the entire history.