#!/bin/sh

N=0

R=""

MAX=50

while [ $N -le $MAX ] && [ "x$R" = "x" ]

do

R=$(git log -1 --pretty=format:%b HEAD~$N | awk '$2 ~ /@([0-9]+)$/ {sub(".*@", "", $2); print $2}')

N=$(($N+1))

done

if [ "x$R" != "x" ]; then

if [ $N -gt 1 ]; then

R=$R\+$((N-1))

fi

echo $R

fi