Fix gcb problems with verbosity and collation

[pablombg]

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

This PR fixes a couple of issues in checkout::branch (the gcb function) related to the verbosity of the output and the ordering of the branches.

Fixes #167 Fixes #180 Fixes #195

Before

Instead of the HEAD, a wrong branch (main in the screenshot) is used as a header line (this behavior depends on the locales configuration, LC_COLLATE="es_ES.UTF-8" in this example). Furthermore, the list contains the last commit hash and subject, complicating the selection of the right one with fzf:

After

The right line is used as a header (the current HEAD, which starts with an asterisk), and the list shows just the branch names:

Type of change

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

Test environment

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

[cjappl]

@pablombg will you attach before and after screenshots in this PR so we can take a look at the change easily?

Thanks for the contribution!!

[pablombg]

@pablombg will you attach before and after screenshots in this PR so we can take a look at the change easily?

Hi @cjappl, I've included the screenshots in the description. I've also updated the PR to include the same changes for fish and tested the changes with the three supported shells.

[cjappl]

Wow, WAY better IMO. Thanks for the change. Going to ping @wfxr to approve himself.

[tommyalatalo]

Please approve this PR and merge it so that we can get this fix, I also pushed this same change to another PR before noticing this one

[cjappl]

pinging @wfxr for a review. Looks good to me!