Git and Vim

Reference: Using Git from command-line mode

Set core.editor

git config --global core.editor vim
# check your config
git config --list

Using Git from command line

# use :!
# add the current file
:!git add %
:!git commit -m "commit message"
:!git push origin master
:!git diff --cached

Adding key mapping

nnoremap \ga :<C-u>!git add  %<CR>