function we_are_in_git_work_tree {
    git rev-parse --is-inside-work-tree &> /dev/null
}

function parse_git_branch {
    if we_are_in_git_work_tree
    then
    local BR=$(git rev-parse --symbolic-full-name --abbrev-ref HEAD 2> /dev/null)
    if [ "$BR" == HEAD ]
    then
        local NM=$(git name-rev --name-only HEAD 2> /dev/null)
        if [ "$NM" != undefined ]
        then echo -n "@$NM"
        else git rev-parse --short HEAD 2> /dev/null
        fi
    else
        echo -n $BR
    fi
    fi
}

function parse_git_status {
    if we_are_in_git_work_tree
    then 
    local ST=$(git status --short 2> /dev/null)
    if [ -n "$ST" ]
    then echo -n " + "
    else echo -n " - "
    fi
    fi
}

function pwd_depth_limit_2 {
    if [ "$PWD" = "$HOME" ]
    then echo -n "~"
    else pwd | sed -e "s|.*/\(.*/.*\)|\1|"
    fi
}

COLBROWN="\[\033[1;33m\]"
COLRED="\[\033[1;31m\]"
COLCLEAR="\[\033[0m\]"

# export all these for subshells
export -f parse_git_branch parse_git_status we_are_in_git_work_tree pwd_depth_limit_2
export PS1="$COLRED<$COLBROWN \$(pwd_depth_limit_2)$COLRED\$(parse_git_status)$COLBROWN\$(parse_git_branch) $COLRED>$COLCLEAR "
export TERM="xterm-color"