A bash function for coloring the current git branch. Red for dirty, yellow if all files are staged and clean is green. This uses the color functions from https://gist.github.com/4503986

Bash color Git branch.sh

# https://gist.github.com/joemaller/4527475
# 
# A simple bash function for coloring the current git branch. 
# - Red: Tree is dirty
# - Yellow: All modified files are staged
# - Green: Tree is clean
#
# This uses the color functions from https://gist.github.com/4503986

function git_branch() {
  is_git=$(git status --porcelain 2> /dev/null ) || return
  branch=$(git symbolic-ref --short HEAD 2> /dev/null)
  if [ -z "$branch" ]; then
    branch=$(git status | sed -n 1p )
  fi
  is_dirty=$(git update-index --refresh 2> /dev/null)
  is_staged=$(git diff-index --cached HEAD 2> /dev/null)
  if [ -n "$is_dirty" ]; then
    echo $(DARK_RED "[$branch]")
  elif [ -n "$is_staged" ]; then
    echo $(DARK_YELLOW "[$branch]")
  else
    echo $(DARK_GREEN "[$branch]")
  fi
}