Shows the current branch of a git or mercurial repository as the last part of your command line prompt

show_branch_prompt.sh

function parse_branch {
  local BRANCH=$(git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/(\1)/')
  if [ -z "$BRANCH" ]
  then
    BRANCH=$(hg branch 2>/dev/null)
    if [ -n "$BRANCH" ]
    then
      BRANCH="("$BRANCH")"
    fi
  fi
  echo $BRANCH
}
 
function proml {
  local        BLACK="\[\033[0;30m\]"
  local          RED="\[\033[0;31m\]"
  local     BOLD_RED="\[\033[1;31m\]"
  local        GREEN="\[\033[0;32m\]"
  local   BOLD_GREEN="\[\033[1;32m\]"
  local        BROWN="\[\033[0;33m\]"
  local       YELLOW="\[\033[1;33m\]"
  local         BLUE="\[\033[0;34m\]"
  local    BOLD_BLUE="\[\033[1;34m\]"
  local       PURPLE="\[\033[0;35m\]"
  local  BOLD_PURPLE="\[\033[1;35m\]"
  local         CYAN="\[\033[0;36m\]"
  local    BOLD_CYAN="\[\033[1;36m\]"
  local        WHITE="\[\033[1;37m\]"
  local    BOLD_GRAY="\[\033[0;37m\]"
  case $TERM in
    xterm*)
    TITLEBAR='\[\033]0;\u@\h:\w\007\]'
    ;;
    *)
    TITLEBAR=""
    ;;
  esac
 
PS1="${TITLEBAR}\
$RED[$GREEN\u@\h:\w$BLUE\$(parse_branch)$RED]\
$BLUE\$ "
PS2='> '
PS4='+ '
}
proml