TRACKS CHANGES TO PARTS OF SPREE SINCE A GIVEN COMMIT

track_spree

#!/usr/bin/env zsh

# 1304046900  TRACKS CHANGES TO PARTS OF SPREE SINCE A GIVEN COMMIT

# To be placed in the root of your app.

old_commit="32483802d823e92c0746d080217870dd48f49307"

parts=(
  core/app/assets/javascripts/store/checkout.js
  core/app/helpers/spree/base_helper.rb
  core/app/helpers/spree/checkout_helper.rb
  core/app/views/spree
  core/config/locales/en.yml
  core/lib/generators/spree/install/templates
)

# Exit on failure
#
set -e

git clone git://github.com/spree/spree.git tmp/spree_check
cd tmp/spree_check

if output=$(git diff --exit-code --name-status $old_commit HEAD -- $parts); then
  echo "No changes"
else

  # Group name statuses
  #
  while read -r flag file; do
    case $flag in
      (M*) modified+=($file) ;;
      (A*) added+=($file) ;;
      (D*) deleted+=($file) ;;
    esac
  done <<< $output

  # Display groups
  #
  if [[ -n $modified ]]; then
    print -f "M %s\n" $modified
    echo
  fi
  if [[ -n $added ]]; then
    print -f "A %s\n" $added
    echo
  fi
  if [[ -n $deleted ]]; then
    print -f "D %s\n" $deleted
    echo
  fi

  print -n "Show full git-diff of modified files? (Y/n) "
  if read -q; then
    git diff $old_commit HEAD -- $modified | awk 'NR>1 && /^diff/ {print ; print "###"} {print}'
  fi
  echo

  print "You are now at: $(git rev-parse HEAD)"
fi

cd ../../
rm -r tmp/spree_check

can't you just follow the trail of bodies?