Shell script to override Git Bash's bash prompt on Windows (Git 2.0+)

git-prompt-local-override.sh

##PS1='\[\033]0;$MSYSTEM:${PWD//[^[:ascii:]]/?}\007\]' # set window title
PS1='\[\033]0;${PWD//[^[:ascii:]]/?}\007\]' # set window title
PS1="$PS1"'\n'                 # new line
PS1="$PS1"'\[\033[32m\]'       # change to green
PS1="$PS1"'\u@\h '             # user@host<space>
##PS1="$PS1"'\[\033[35m\]'       # change to purple
##PS1="$PS1"'$MSYSTEM '          # show MSYSTEM
PS1="$PS1"'\[\033[33m\]'       # change to brownish yellow
PS1="$PS1"'\w'                 # current working directory
if test -z "$WINELOADERNOEXEC"
then
  GIT_EXEC_PATH="$(git --exec-path 2>/dev/null)"
  COMPLETION_PATH="${GIT_EXEC_PATH%/libexec/git-core}"
  COMPLETION_PATH="${COMPLETION_PATH%/lib/git-core}"
  COMPLETION_PATH="$COMPLETION_PATH/share/git/completion"
  if test -f "$COMPLETION_PATH/git-prompt.sh"
  then
    . "$COMPLETION_PATH/git-completion.bash"
    . "$COMPLETION_PATH/git-prompt.sh"
    PS1="$PS1"'\[\033[36m\]'  # change color to cyan
    PS1="$PS1"'`__git_ps1`'   # bash function
  fi
fi
PS1="$PS1"'\[\033[0m\]'        # change color
PS1="$PS1"'\n'                 # new line
PS1="$PS1"'$ '                 # prompt: always $