Custom WSL1 Bashrc script to display git branch name

.bashrc

## Git prompt
force_color_prompt=yes
color_prompt=yes
parse_git_branch() {
 git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/(\1)/'
}
parse_tty_bg(){
    # $1 will be replace by \l (tty number)
    tty_number=$(sed 's/tty//' <<< $1)
    if [ "$tty_number" -lt 7 ]; then
        echo $tty_number
    else
        echo $tty_number=0
    fi
}
parse_tty_font(){
    tty_number2=$(sed 's/tty//' <<< $1)
    if [ "$tty_number2" -lt 7 ]; then
        echo 30
    fi
}
if [ "$color_prompt" = yes ]; then
 PS1='${debian_chroot:+($debian_chroot)}\n\[\033[$(parse_tty_font \l);4$(parse_tty_bg \l)m\]  \l - \D{%d.%m.%Y} - \t \[\033[00m\] \[\033[01;34m\]\w\[\033[01;31m\] $(parse_git_branch)\[\033[00m\]\n\$ '
else
 PS1='${debian_chroot:+($debian_chroot)}\l - \D{%d.%m.%Y} - \t > \w$ (parse_git_branch)\$ '
fi
unset color_prompt force_color_prompt