# Useful precomit hooks# Please see https://git-scm.com/book/en/v2/Customizing-Git-Git-Hooks for instructions on installation. # Crystal linter# This is a modified version of the pre-commit hook from the crystal repo. https://github.com/crystal-lang/crystal/blob/master/scripts/git/pre-commit# Please refer to that if you'd like an version that doesn't automatically format staged files.changed_cr_files=$(git diff --cached --name-only --diff-filter=ACM | grep '\.cr$')if [ ! -z "$changed_cr_files" ]; then  if [ -x bin/crystal ]; then    # use bin/crystal wrapper when available to run local compiler build    bin/crystal tool format $changed_cr_files >&2  else    crystal tool format $changed_cr_files >&2  fi   git add $changed_cr_filesfi