One of my favorite Vim plugins is vim-gitgutter - it shows gutter markings for changes in the current buffer when that file is tracked by git.
It looks like this:
+ = new lines
- = deleted line
~ = changed line
It also comes with a few very useful commands for working with hunks, sections of changed code in your file.
To jump between hunks you can use ]c and [c. Since I don't really use the return and backspace keys in normal mode I have mapped those instead:
nnoremap <silent> <cr> :GitGutterNextHunk<cr>
nnoremap <silent> <backspace> :GitGutterPrevHunk<cr>This is especially useful on big files (more than a bufferful) with scattered changes.