#!/bin/sh

usage() {
  echo "usage: $0 <filename> <lineno>"
  exit 1
}

filename="$1"

[ -z "${filename}" ] && usage

lineno="$2"

[ -z "${lineno}" ] && usage

line=$(git blame -L "${lineno}","${lineno}" "${filename}")
sha=$(echo $line | awk '{print $1}')

if [[ "${sha}" == "00000000" ]]; then
  echo "${line}"
else
  git show "${sha}"
fi