Precommit for linting R

pre-commit.R.bash

#!/bin/bash
#
if git rev-parse --verify HEAD >/dev/null 2>&1
then
	against=HEAD
else
	# Initial commit: diff against an empty tree object
	against=$(git hash-object -t tree /dev/null)
fi

# Redirect output to stderr.
exec 1>&2

git diff --cached --name-only --diff-filter=AM -z $against | while IFS= read -r -d $'\0' x; do
  if [ "${x: -2}" = ".R" ]; then
    Rscript  --no-save --no-restore --no-site-file --no-environ -e "lintr::lint('$x')"
  fi
done