Git Squash

1. Add a global “squash” alias from bash

   git config --global alias.squash '!f(){ git reset --soft HEAD~${1} && git commit --edit -m"$(git log --format=%B --reverse HEAD..HEAD@{1})"; };f'
   

2. /.gitconfig should now contain this alias:

   [alias]
    squash = "!f(){ git reset --soft HEAD~${1} && git commit --edit -m\"$(git log --format=%B --reverse HEAD..HEAD@{1})\"; };f"
   

3. How to use it? Assuming to squash last N commits:

   >git squash N