.gitconfig file for a Mac

gitconfig.txt

# Change the stuff in angle brackets <>
[user]
    name = <Your name>
    email = <[email protected]>
[core]
    autocrlf = input
    safecrlf = true
    pager = 
    excludesfile = /Users/<username>/.gitignore_global
    editor = nano

[alias]
    co = checkout
    ci = commit
    st = status
    br = branch
    bc = branch --contains
    oneline = log -n 20 --oneline --format=format:'%C(bold cyan)%h%C(reset) - %C(bold green)(%ar)%C(reset) %C(white)%s%C(reset) %C(dim white)- %an%C(reset)%C(bold yellow)%d%C(reset)'
    type = cat-file -t
    dump = cat-file -p
    staged = diff --staged
    unmerged = diff --name-only --diff-filter=U 
    untracked = ls-files --others --exclude-standard
	merge = merge -Xignore-all-space
    changed = diff --name-only HEAD^
    contains = branch --contains
    graph = log --graph --abbrev-commit --date=iso
    hash = log -n 1 --format=format:'%h'

[push]
    default = current

[difftool "sourcetree"]
    cmd = opendiff \"$LOCAL\" \"$REMOTE\"
    path = 

[mergetool "sourcetree"]
    cmd = /Applications/SourceTree.app/Contents/Resources/opendiff-w.sh \"$LOCAL\" \"$REMOTE\" -ancestor \"$BASE\" -merge \"$MERGED\"
    trustExitCode = true

[filter "media"]
    clean = git-media-clean %f
    smudge = git-media-smudge %f

[color]
  ui = true

[color "branch"]
  current = blue
  local = cyan bold
  remote = green bold

[color "diff"]
  meta = white
  frag = red bold
  old = yellow dim
  new = green bold
  whitespace = white reverse

[color "status"]
  added = green
  changed = yellow
  untracked = red
  branch = magenta

[commit]
    template = ~/.git

[format]
    pretty = format:%C(bold cyan)%h%C(reset) - %C(bold green)(%ar)%C(reset) %C(white)%s%C(reset) %C(dim white)- %an%C(reset)%C(bold yellow)%d%C(reset)
[merge]
    tool = opendiff
[diff]
    tool = opendiff
[mergetool]
    keepBackup = false
    
[format]
    pretty = format:%C(bold cyan)%h%C(reset) - %C(bold green)(%ar)%C(reset) %C(white)%$
[merge]
    tool = opendiff
[diff]
    tool = opendiff
[mergetool]
    keepBackup = false

I added git bc for git branch --contains since I have been using that a lot.