tmp=.git/summary-$$

trap 'rm -f $tmp-*' 0

since="$1"

until="$2"

case 0 in

1)

bottom=$(git rev-parse master@{"$1"})

top=$(git rev-parse master@{"$2"})

;;

0)

git rev-list --first-parent --since="$since" --until="$until" \

master >"$tmp-1" &&

bottom=$(tail -n 1 "$tmp-1") &&

top=$(head -n 1 "$tmp-1") &&

rm -f "$tmp-1"

;;

num_patches=$(git rev-list --no-merges $bottom..$top | wc -l)

git shortlog -s -n --no-merges $bottom..$top >"$tmp-0.txt"

num_contrib=$(wc -l <"$tmp-0.txt")

summary=$(git diff --stat -M $bottom..$top | tail -n 1)

num_files=$(expr "$summary" : ' *\([1-9][0-9]*\) files changed')

num_added=$(expr "$summary" : '.*changed, \([1-9][0-9]*\) insertions')

num_deleted=$(expr "$summary" : '.*, \([1-9][0-9]*\) deletions')

cat <<EOF

git shortlog -w72,2,4 --no-merges $bottom..$top

git diff --dirstat $bottom..$top