Drupal- see where text formats are used, report fields and entities using which input filters

Example of the need

Double-check usages of deprecated filters, remove entirely if possible

‘Token filter’ ` and ‘Display Suite code’

  • config/filter.format.token_filter.yml
  • config/filter.format.ds_code.yml

both were causing “Missing filter plugin: filter_null.” errors in the logs (meaning they had a filter which did not get upgraded from Drupal 7), with no noted problems— probably because they were not used, but we can confirm that.

Drupal 7 had this module: https://www.drupal.org/project/text_formats_report

People with the filter null problem who could benefit from such a report: