git_branch profile script

git_branch.sh

git_branch() {
  local green=$(tput setaf 10)
  local yellow=$(tput setaf 11)
  local reset=$(tput sgr0)

  local branch=
  local gitlabel="git."
  local sep="| "
  if [ -d .git ]; then
    status=$(git status 2> /dev/null)
    branch="$(git branch 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/')"
    if [[ $( echo $status | grep "branch is ahead") ]]; then
      branch="$branch*"
    fi
    if [[ $( echo $status | grep "working tree clean") ]]; then
      branch=$(printf '\001%s\002%s\001%s\002' "$gitlabel" "$green" "$branch" "$reset")
    else
      branch=$(printf '\001%s\002%s\001%s\002' "$gitlabel" "$yellow" "$branch" "$reset")
    fi
  fi

  if ! [ -z "$branch" ]; then echo -e " $sep$branch"; fi
}

PS1="\h:\W\$(git_branch) $ "

Fixed line wrap. Ref: http://mywiki.wooledge.org/BashFAQ/053