#!/usr/bin/env bash
set -euo pipefail
demo_dir=$(mktemp -d)
git init -q "$demo_dir"
cd "$demo_dir"

printf 'theme=blue\n' > settings.txt
git add settings.txt
git -c user.name='Example' -c user.email='example@example.invalid' \
  commit -qm 'Initial example'

printf 'theme=gold\n' > settings.txt
printf 'Review this new file\n' > review-notes.txt

git status --short
git diff -- settings.txt
git add settings.txt
git diff -- settings.txt
git diff --cached -- settings.txt
printf "Demo folder: %s\n" "$demo_dir"