Martin's colored git branch & RVM/gemset .bash_profile

.bash_profile

[[ -s "$HOME/.rvm/scripts/rvm" ]] && . "$HOME/.rvm/scripts/rvm" # Load RVM function
bash_prompt() {
   #git
   local status=$(git status 2> /dev/null | grep 'working directory clean')
   local dirty=''
   if [ -z "$status" ]; then
        local dirty='*'
   fi
   local branch=$(git branch 2> /dev/null | grep -e "\* " | sed "s/^..\(.*\)/\1/")

   if [ -z "$branch" ]; then
        export PS1="[$(date +%H:%M) \u@\[\033[33m\]\h\[\033[39m\]:\w] "
   else
        export PS1="[$(date +%H:%M) \u@\[\033[33m\]\h\[\033[39m\]:\w \[\033[32m\]$branch\[\033[36m\]$dirty\[\033[39m\]] "
   fi

   # RVM
   n_cols=$(tput cols)
   rvm_prompt="$(rvm-prompt)"
   let rvm_ppos=$n_cols-${#rvm_prompt}

   tput sc # save cursor
   tput cuf $rvm_ppos; tput setaf 1 # right justified and in red
   echo -n $rvm_prompt
   tput sgr0 # may not always work as expected
   tput rc # restore cursor

}

PROMPT_COMMAND=bash_prompt