PS1 git_branch w/o git_completion

gistfile1.sh

function git_branch_name {
  val=`git branch 2>/dev/null | grep '^*' | colrm 1 2`
  echo "$val"
}

function parse_git_branch {
  val=`git_branch_name | sed 's_\(.*\)_(\1)_'`
  echo "$val"
}

if [ "$color_prompt" = yes ]; then
    PS1="${debian_chroot:+($debian_chroot)}\[\033[01;32m\]\u@\h\[\033[00m\]:\[\033[01;34m\]\w\[\033[00m\] \[\033[0;33m\]\$(parse_git_branch) \$\[\033[00m\] "
else
    PS1='${debian_chroot:+($debian_chroot)}\u@\h:\w $(parse_git_branch) \$ '
fi