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: foreign-operating-systems, Type: binary, udeb
This tag has not been emitted in any package tested by Lintian.