Abbreviate Git Directory Edge Cases

[dahlbyk]

Two edge cases not considered by original implementation (#720):

1. If the current repo is bare, returns its parent directory.
2. Get-GitDirectory inside a worktree currently returns the path to .git/worktrees/[name], which won't match the current path. I can think of two ways to resolve this:
   1. Revise Get-GitDirectory to return the contents of .git/worktrees/[name]/gitdir. No idea what the downstream effects of this would be.
   2. Check here if $gitPath matches .git/worktrees/; if it does, set $gitPath to the contents of $gitPath/gitdir

[RexTremendae]

Submitted a PR (#797) to address nr 1 above.

I also found another thing which I don't really understand, Utils.ps1 line 288:
if (!$settings -or !$currentPath -or $currentPath.Equals($Home, $stringComparison))

This means that when in the home directory root, the path won't be abbreviated, this will only when I go down one or more levels. Isn't a more standard behavior to also abbreviate the home dir to only '~'?

[rkeithhill]

Isn't a more standard behavior to also abbreviate the home dir to only '~'?

On Linux yes but after using it on Windows, it seemed a bit too much of an abbreviation for the typical Windows user. We could qualify that last condition with a test for the OS so that we'd only do this on Windows. Alternatively, we could add a new setting for this that defaults differently for Windows.

[RexTremendae]

Alright, then I vote for a setting so that people who use both Windows and Linux can feel welcome at ~ :D

[rkeithhill]

After thinking about this some more, I'm really tempted to simplify and make Windows behave like Linux and just show ~ when in the home dir.

[dahlbyk]

Is it reasonable to default to whatever PowerShell defaults to without posh-git?

[rkeithhill]

Well, PowerShell does not abbreviate paths displayed in the prompt. Maybe we should not enable this option DefaultPromptAbbreviateHomeDirectory by default. And if the user does enable it, make it behave like a typical Linux prompt - always display ~ in place of the home path even when directly in the home path.

[dahlbyk]

And if the user does enable it, make it behave like a typical Linux prompt - always display ~ in place of the home path even when directly in the home path.

This matches Git Bash behavior, too.

[rkeithhill]

OK, I'll submit a PR to make this change later tonight!