Checked out revision 0.
A         a
Adding         a
Transmitting file data .
Committed revision 1.
% initial roundtrip
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0 added a
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% second roundtrip should do nothing
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% new hg rev
updating to branch default
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
% adding an empty revision
% echo hg to svn
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1 b
0 emtpy
% svn back to hg should do nothing
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% hg back to svn should do nothing
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