improved git prompt yay

gistfile1.txt

#   [andre ~/.bash](master)$    # clean working directory
#   [andre ~/.bash](master⚡)$   # dirty working directory
#   [andre ~/.bash](master~2)$  # checked out revision not a branch
#   [andre ~/.bash](branch)$    # checked out branch with same commits as master

function parse_git_dirty {
  [[ $(git status 2> /dev/null | tail -n1) != "nothing to commit (working directory clean)" ]] && echo "⚡"
}

function parse_git_branch {
  local b="$(git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e 's/^* //')"
  if [ -n "$b" ] && [ "$b" = "(no branch)" ]; then
    local b="$(git name-rev --name-only HEAD 2> /dev/null)"
  fi

  if [ -n "$b" ]; then
    printf "($b$(parse_git_dirty))"
  fi
}

export PS1='\[\033k\033\\\]\[\e[0;34m\][\u \w]$(parse_git_branch)\$\[\e[0;39m\] '

The main reason I wrote my own is that __git_ps1 doesn't support non-branch locations, like master~2. If that's changed, I'm a happy man. :)