Mercurial .bashrc mod for prompt showing bookmark/rev and incoming state

gistfile1.txt

# add hg info to the prompt if it exists...
in_hg() {
  # returns 0 if in a hg repo, 1 if not
  d=$PWD
  # Check up the path (using bash string operators) looking for .hg
  while [ "${d}" != "" ]; do
    if [ -d "${d}/.hg" ]; then
      HG_DIR=$d/.hg
      return 0
    fi
    d=${d%/*}
  done
  return 1
}

C_BYELLOW="\e[0;93m"
C_BRED="\e[0;91m"
C_DEFAULT="\e[m"
hg_ps1() {
  if in_hg; then
    if [ -f $HG_DIR/bookmarks.current ]; then
      HGP=`hg prompt "[${C_BYELLOW}{${C_BRED}{incoming}}{bookmark}${C_DEFAULT}]"`
    else
      HGP=`hg prompt "[${C_BYELLOW}{${C_BRED}{incoming}}r{rev}${C_DEFAULT}]"`
    fi
    printf $HGP
  fi
}
PS1='$(hg_ps1)'$PS1