ex-format-changed-files.sh

#!/bin/bash

set -e

# Get the list of changed files since the last commit
changed_files=$(git diff --name-only HEAD~1..HEAD)

if [ -z "$changed_files" ]; then
  echo "No changes since the last commit."
  exit 0
fi

# Run mix format on each changed file
for file in $changed_files; do
  if [[ $file == *.ex || $file == *.exs ]]; then
    mix format $file
  fi
done

echo "Formatting completed."