.bashrc

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

function git_since_last_commit {
now=`date +%s`;
last_commit=$(git log --pretty=format:%at -1 2> /dev/null) || return;
seconds_since_last_commit=$((now-last_commit));
minutes_since_last_commit=$((seconds_since_last_commit/60));
hours_since_last_commit=$((minutes_since_last_commit/60));
minutes_since_last_commit=$((minutes_since_last_commit%60));

echo "${hours_since_last_commit}h${minutes_since_last_commit}m ";
}

unset temp

function prompt_command {

  if [ "$HOME" == "$PWD" ]
  then
    newPWD="~"
  elif [ "$HOME" ==  "${PWD:0:${#HOME}}" ]
  then
    newPWD="~${PWD:${#HOME}}"
  else
    newPWD=$PWD
  fi

  TERMWIDTH=${COLUMNS}

  local temp="→ [ ${newPWD} ] $(git_branch)$(git_since_last_commit)"
  let fillsize=${TERMWIDTH}-${#temp}
  if [ "$fillsize" -gt "0" ]
  then
    fill="----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------"
    fill="${fill:0:${fillsize}}"
  fi
}

PROMPT_COMMAND=prompt_command
PS1="\[\033[1;31m\]→\[\033[0m\] \[\033[0;36m\][ \[\033[1;32m\]\${newPWD}\[\033[0;36m\] ] \[\033[0m\]\[\033[1;31m\]\$(git_branch)\[\033[0m\]\$(git_since_last_commit)\${fill}\n$ "