ruby 2.5.1 orig tarball differs from upstream

[John Leach <john@johnleach.co.uk>]

Hi,

I noticed that debian's ruby2.5_2.5.1.orig.tar.gz (sha1
e95ff19092f2026b161e6e6d7759489d646e10aa) differs from the actual
upstream ruby 2.5.1 release tarball
(93fafd57a724974b951957c522cdc4478a6bdc2e)

The only difference is some gems removed from the Debian tarball:

$ diff -ur upstream-orig/ debian-orig/
Only in upstream/ext/fiddle: libffi-3.2.1
Only in upstream/gems: did_you_mean-1.2.0
Only in upstream/gems: did_you_mean-1.2.0.gem
Only in upstream/gems: minitest-5.10.3
Only in upstream/gems: minitest-5.10.3.gem
Only in upstream/gems: net-telnet-0.1.1
Only in upstream/gems: net-telnet-0.1.1.gem
Only in upstream/gems: power_assert-1.1.1
Only in upstream/gems: power_assert-1.1.1.gem
Only in upstream/gems: rake-12.3.0
Only in upstream/gems: rake-12.3.0.gem
Only in upstream/gems: test-unit-3.2.7
Only in upstream/gems: test-unit-3.2.7.gem
Only in upstream/gems: xmlrpc-0.3.0
Only in upstream/gems: xmlrpc-0.3.0.gem

Is this expected? It was a bit surprising to me to find that the
included orig tarball wasn't exactly the one from upstream.

Thanks,

John.
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