Hey guys and girls,
I'm writing a plugin to delete duplicate attachments (overwrite uploads didn't work for me), but I'm having trouble with preserving the file if you delete one of the media attachment dependent on it.
I'm looking for a hook that get's called when you remove an attachment. I already found one that works when adding an attachment (wp_handle_upload_prefilter), but no such luck for the deletion of attachments.
The hooks I have already tried and did not work for my needs:
before_delete_post
delete_attachment
wp_delete_attachment
Thanks.