All reports of macos-resource-fork-file-in-package for the archive. The extended description of this tag is:

There is a file in the package with a name starting with ._, the file name pattern used by Mac OS X to store resource forks in non-native file systems. Such files are generally useless in Debian packages and were usually accidentally included by copying complete directories from the source tarball.

Severity: normal, Certainty: certain

Check: files, Type: binary, udeb

This tag has not been emitted in any package tested by Lintian.