Blacklist filenames regex


Is there a way to blacklist files in regex-format i.e. for file-uploading?
As far as I understood the config-option “blacklisted_files” is only for filenames and not for regex, isn’t it?

My goal is to prevent my users to upload files with special chars in it.

I don’t think there is no easy way to block special characters for file names. there are discussions on Guthub without visible solution

But you might build a Workflow which renames the files according your expectations…