All reports of dh-make-template-in-source for the archive. The extended description of this tag is:

This package contains debian/*.ex and/or debian/ex.* files installed by dh_make. These are intended to be filled in with the package's details and renamed for use by various debhelper commands. If they are not being used, they should be removed.

Severity: normal, Certainty: possible

Check: debhelper, Type: source

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