I don't know if you're aware, so this is just a friendly suggestion: if you define these as git aliases instead, you won't use your shell's namespace and have it available for other aliases. As git aliases you would run it like `git s` or `git ca`. If you also alias git to g it will be `g ca`. If you do that, don't forget to call `__git_complete g __git_main` in .bashrc for it to auto-complete aliases for `g` and not just `git`. For example, to define `ca`, run this

    git config --global alias.ca 'commit -am'