show git branch in bash prompt, nicer bash prompt

bashrc

# add to home .bashrc

if [[ $- != *i* ]] ; then
  # Shell is non-interactive.  Be done now!
  return
fi

safe_term=${TERM//[^[:alnum:]]/?}
match_lhs=""
[[ -f ~/.dir_colors   ]] && match_lhs="${match_lhs}$(<~/.dir_colors)"
[[ -f /etc/DIR_COLORS ]] && match_lhs="${match_lhs}$(</etc/DIR_COLORS)"


function parse_git_branch {
  #git branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/(\1)/'
  #Rather than running git-branch + sed for every shell prompt, you can use this:
  ref=$(git symbolic-ref HEAD 2> /dev/null) || return
  echo \(${ref#refs/heads/}\)
  
}
 
function proml {
  local        BLUE="\[\033[0;34m\]"
  local  LIGHT_BLUE="\[\033[1;34m\]"
  local         RED="\[\033[31m\]"
  local   LIGHT_RED="\[\033[1;31m\]"
  local       GREEN="\[\033[32m\]"
  local LIGHT_GREEN="\[\033[1;32m\]"
  local      YELLOW="\[\033[1;33m\]"
  local       WHITE="\[\033[1;37m\]"
  local  LIGHT_GRAY="\[\033[37m\]"
  local        CYAN="\[\033[36m\]"
  local  LIGHT_CYAN="\[\033[1;36m\]"
  local   NO_COLOUR="\[\033[0m\]"
  local      PURPLE="\[\033[0;35m\]"
  local        PINK="\[\033[1;35m\]"
PS1="${TITLEBAR}$BLUE[$RED\u@\h $CYAN\$(~/.rvm/bin/rvm-prompt) $GREEN\$(parse_git_branch)$BLUE] $YELLOW\w$RED \$$WHITE "
PS2='> '
PS4='+ '
}
proml


# which will used a history file based on the terminal name.
# export  HISTFILE=$HOME/.bash_history.$(tty|sed 's|/dev/tty||')
export HISTFILE=$HOME/.bash_history
# make a long History
export HISTSIZE=100000
export HISTCONTROL=ignoreboth
export HISTTIMEFORMAT='%F %T '
shopt -s histappend

export SVN_EDITOR="vim"
export EDITOR="vim"

# make bash autocomplete with up arrow/down arrow
bind '"\e[A":history-search-backward'
bind '"\e[B":history-search-forward'

# Try to keep environment pollution down, EPA loves us.
unset use_color safe_term match_lhs

# for memcached and rails:
export EVENT_NOKQUEUE=1
export RAKE_COLUMNS=100

# set some options
shopt -s checkwinsize
shopt -s histappend
shopt -s extglob
shopt -s cdspell
shopt -s hostcomplete
shopt -s no_empty_cmd_completion
shopt -s cmdhist

# fuck that you have new mail shit
unset MAILCHECK