/usr/share/ is in ruby-rubymail 1.1.0-2.
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/usr/share/rubygems-integration/
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/usr/share/rubygems-integration/all/specifications/
/usr/share/rubygems-integration/all/specifications/rmail-1.1.0.gemspec
/usr/share/doc/
/usr/share/doc/ruby-rubymail/
/usr/share/doc/ruby-rubymail/NOTES
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/usr/share/doc/ruby-rubymail/TODO
/usr/share/doc/ruby-rubymail/copyright
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/usr/share/doc/ruby-rubymail/guide/
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/usr/share/doc/ruby-rubymail/guide/TableOfContents.txt
/usr/share/doc/ruby-rubymail/guide/MIME.txt
/usr/share/doc/ruby-rubymail/changelog.Debian.gz