How to find the nearest parent of a Git branch?

Question

Let\'s say I have the following local repository with a commit tree like this:

master --> a
            \\
             \\
      develop c --> d
               


        

Answer 1

Here's my Powershell Version:

function Get-GHAParentBranch {
    [CmdletBinding()]
    param(
        $Name = (git branch --show-current)
    )
    git show-branch | 
      Select-String '^[^\[]*\*' | 
      Select-String -NotMatch -Pattern "\[$([Regex]::Escape($Name)).*?\]" |
      Select-Object -First 1 |
      Foreach-Object {$PSItem -replace '^.+?\[(.+)\].+$','$1'}
}