usage: `harvest syntaxritual` optional: give it a starting date `harvest syntaxritual 2013-04-20`

gistfile1.txt

harvest() {
  dow=$(date "+%u")
  if [ -n "$2" ]; then
    date=$2
  else
    if [ $dow = "1" ]; then
      date=$(date -v-mon -v -1w "+%Y-%m-%d 00:00:00")
    else
      date=$(date -v-mon "+%Y-%m-%d 00:00:00")
    fi
  fi
  echo $date
  git log --pretty=format:%ad\ %s\; --author="$1" --since="$date"
}