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#!/bin/sh
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 "$tmp-1"
;;
esac
num_patches=$(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
During the period of $since .. $until:
Number of contributors : $num_contrib
Number of change sets : $num_patches
Number of changed files : $num_files
Number of added lines : $num_added
Number of deleted lines : $num_deleted
Changes during this period are as follows:
EOF
git --no-pager shortlog -w72,2,4 --no-merges $bottom..$top
git --no-pager diff --dirstat $bottom..$top
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