# Skip backup files, files without a leading package name,
# and files we've already seen
grep !$seen{$_}++ && !m{/\.} && !m{~$} && m{^/Callbacks/[^/]+\Q$page/$name\E$},
# Skip backup files, files without a leading package name,
# and files we've already seen
grep !$seen{$_}++ && !m{/\.} && !m{~$} && m{^/Callbacks/[^/]+\Q$page/$name\E$},