gistfile1.sh

function detect_rvm {
  local gemset=$(echo $GEM_HOME | awk -F'@' '{print $2}')
  [ "$gemset" != "" ] && gemset="@$gemset"
  local version=$(echo $MY_RUBY_HOME | awk -F'-' '{print $2}')
  [ "$version" != "" ] && version="$version"
  local full="$version$gemset"
  [ "$full" != "" ] && echo "$full"
}

function git_deleted {
  [[ $(git status 2> /dev/null | grep deleted:) != "" ]] && echo "-"
}

function git_added {
  [[ $(git status 2> /dev/null | grep "Untracked files:") != "" ]] && echo '+'
}

function git_modified {
  [[ $(git status 2> /dev/null | grep modified:) != "" ]] && echo "*"
}

function git_dirty {
  echo "$(git_added)$(git_modified)$(git_deleted)"
}

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

function git_branch {
  ref=$(git symbolic-ref HEAD 2> /dev/null) || return
  echo " ("${ref#refs/heads/}$(git_dirty)")"
}

function last_cmd {
  history | tail -1 | cut -c 8-
}

bash_prompt() {
local NONE='\[\033[0m\]'    # unsets color to term's fg color
# regular colors
local K='\[\033[0;30m\]'    # black
local R='\[\033[0;31m\]'    # red
local G='\[\033[0;32m\]'    # green
local Y='\[\033[0;33m\]'    # yellow
local B='\[\033[0;34m\]'    # blue
local M='\[\033[0;35m\]'    # magenta
local C='\[\033[0;36m\]'    # cyan
local W='\[\033[0;37m\]'    # white

# empahsized (bolded) colors
local EMK='\[\033[1;30m\]'
local EMR='\[\033[1;31m\]'
local EMG='\[\033[1;32m\]'
local EMY='\[\033[1;33m\]'
local EMB='\[\033[1;34m\]'
local EMM='\[\033[1;35m\]'
local EMC='\[\033[1;36m\]'
local EMW='\[\033[1;37m\]'

# background colors
local BGK='\[\033[40m\]'
local BGR='\[\033[41m\]'
local BGG='\[\033[42m\]'
local BGY='\[\033[43m\]'
local BGB='\[\033[44m\]'
local BGM='\[\033[45m\]'
local BGC='\[\033[46m\]'
local BGW='\[\033[47m\]'

PS1="${G}\$(last_cmd)\n${M}\$(date +%H:%M) ${K}${BGW}\$(detect_rvm)${BGK} ${W}[\w]${C}\$(git_branch)${W}\\$ ${NONE}"
}
bash_prompt