grb: rebase on parent of the selected commit

[carlfriedrich]

The git rebase command needs to be passed the parent commit of the one you want to edit. When selecting a commit interactively via fzf, it makes sense to automatically pass the parent commit of the selected one. Within fzf it's otherwise quite hard to find the parent commit by hand if you have found your commit via an fzf search string.

Check list

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

Description

Type of change

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

Test environment

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

[carlfriedrich]

Hmm, some of the checks fail, but it doesn't seem that it's my commit's fault. Seems I cannot restart the checks. @wfxr @cjappl Can you?

[wfxr]

@carlfriedrich Looks like there's something wrong with the fish's ppa in ci. Just ignore it.

[wfxr]

@carlfriedrich Nice improvement! Thanks for your contribution!

[carlfriedrich]

@wfxr Oh, now actually shellcheck reported a real issue. Shall we fix that?

[wfxr]

@carlfriedrich Just a tiny issue. Fixed in https://github.com/wfxr/forgit/commit/85ccdd3f809d9e9892403a631f980406d4a278c6 .

[carlfriedrich]

@wfxr Great, thanks a lot!