Attachment: HTML smuggling with excessive line break obfuscation

type.inbound
and any(attachments,
        (
          .file_extension in~ ("html", "htm", "shtml", "dhtml")
          or .file_extension in~ $file_extensions_common_archives
          or .file_type == "html"
        )
        and any(file.explode(.),
                any(.scan.strings.strings,
                    // return new line padded obfuscation 
                    regex.contains(., '(\\r\\n\S{2}){50,}')
                    and strings.contains(., 'decodeURIComponent')
                )
        )
)