posh-git

A set of PowerShell scripts which provide Git/PowerShell integration

Prompt for Git repositories

The prompt within Git repositories can show the current branch and the state of files (additions, modifications, deletions) within.

Tab completion

Provides tab completion for common commands when using git.
E.g. git ch<tab> --> git checkout

Usage

See profile.example.ps1 as to how you can integrate the tab completion and/or git prompt into your own profile. Prompt formatting, among other things, can be customized using $GitPromptSettings, $GitTabSettings and $TortoiseGitSettings.

Note on performance: displaying file status in the git prompt for a very large repo can be prohibitively slow. Rather than turn off file status entirely, you can disable it on a repo-by-repo basis by adding individual repository paths to $GitPromptSettings.RepositoriesInWhichToDisableFileStatus.

Installing

Verify you have PowerShell 2.0 or better with $PSVersionTable.PSVersion
Verify execution of scripts is allowed with Get-ExecutionPolicy (should be RemoteSigned or Unrestricted). If scripts are not enabled, run PowerShell as Administrator and call Set-ExecutionPolicy RemoteSigned -Scope CurrentUser -Confirm.
Verify that git can be run from PowerShell. If the command is not found, you will need to add a git alias or add %ProgramFiles(x86)%\Git\cmd (or %ProgramFiles%\Git\cmd if you're still on 32-bit) to your PATH environment variable.
Clone the posh-git repository to your local machine.
From the posh-git repository directory, run .\install.ps1.
Enjoy!

The Prompt

PowerShell generates its prompt by executing a prompt function, if one exists. posh-git defines such a function in profile.example.ps1 that outputs the current working directory followed by an abbreviated git status:

C:\Users\Keith [master]>

By default, the status summary has the following format:

[{HEAD-name} +A ~B -C !D | +E ~F -G !H !]

{HEAD-name} is the current branch, or the SHA of a detached HEAD
Cyan means the branch matches its remote
Green means the branch is ahead of its remote (green light to push)
Red means the branch is behind its remote
Yellow means the branch is both ahead of and behind its remote
ABCD represent the index; EFGH represent the working directory
+ = Added files
~ = Modified files
- = Removed files
! = Conflicted files
As in git status, index status is dark green and working directory status is dark red
The trailing ! means there are untracked files

For example, a status of [master +0 ~2 -1 | +1 ~1 -0] corresponds to the following git status:

# On branch master
#
# Changes to be committed:
#   (use "git reset HEAD <file>..." to unstage)
#
#        modified:   this-changed.txt
#        modified:   this-too.txt
#        deleted:    gone.ps1
#
# Changed but not updated:
#   (use "git add <file>..." to update what will be committed)
#   (use "git checkout -- <file>..." to discard changes in working directory)
#
#        modified:   not-staged.ps1
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#        new.file

Based on work by:

Keith Dahlby, http://solutionizing.net/
Mark Embling, http://www.markembling.info/
Jeremy Skinner, http://www.jeremyskinner.co.uk/

smrtRock / posh-git