drone-plugin-check-changes/check-some-are-unignored.sh

#!/bin/sh
set -e -x

PATHS="`IFS='
' paste -s -d:`"

CODE="
  process.exit(
    require('ignore')()
      .add(process.argv[1].split(','))
      .filter(process.argv[2].split(':'))
      .length
    ? 0 : 1
  )"

[ -n "$PATHS" ] && node --eval "$CODE" "$1" "$PATHS"