Git: Add part of (changed) file to index *by line numbers*

Question

Is there a git command to add differences within a range of line-numbers to the index?

I want to be able to select lines in my editor and run a macro to add

Answer 1

The easiest way to do it currently is with git add in interactive mode:

git add -i path/to/file

It will launch simple UI where you can choose chunks you want to stage and let you edit any chunk to remove lines you don't want to commit.