Fix git options

[carlfriedrich]

Adding options to a command in a quoted variable as introduced in #292 causes problems in several cases unfortunately (e.g. git rebase interpreting an empty string argument as a remote, which leads to an error "unknown upstream ''").

Change the implementation in a way that each git command is stored in a shell variable, including the options, which is then evaluated.

Check list

• [x] I have performed a self-review of my code
• [ ] I have commented my code in hard-to-understand areas
• [ ] I have made corresponding changes to the documentation

Description

Type of change

• [x] Bug fix
• [ ] New feature
• [ ] Refactor
• [ ] Breaking change
• [ ] Documentation change

Test environment

• Shell
  • [x] bash
  • [ ] zsh
  • [ ] fish
• OS
  • [x] Linux
  • [ ] Mac OS X
  • [ ] Windows
  • [ ] Others:

[cjappl]

Works for me :) good job catching it.

[carlfriedrich]

@cjappl Thanks for the quick check!

Gonna merge this directly as it is a fix for a bug introduced in #292. Hopefully everything works as it should. If you encounter any unintended behavior, please open an issue for it and assign me directly.