* fixed the p1,2 cleanups
 * added documentation to patches 5,6
 * improved commit message in v4
 Currently when cloning a superproject with --recursive and --reference
 only the superproject learns about its alternates. The submodules are
 cloned independently, which may incur lots of network costs.
 Assume that the reference repository has the submodules at the same
 paths as the to-be-cloned submodule and try to setup alternates from
 Some submodules in the referenced superproject may not be there, 
 (they are just not initialized/cloned/checked out), which yields
 an error for now. In future work we may want to soften the alternate
 check and not die in the clone when one of the given alternates doesn't
 patch 1,2 are modernizing style of t7408, 
 patches 3,4 are not strictly necessary, but I think it is a good thing
 to not leave the submodule related C code in a crippled state (i.e.
 allowing only one reference). The shell code would also need this update,
 but it looked ugly to me, so I postpone it until more of the submodule code
 is written in C. 

Stefan Beller (6):
  t7408: modernize style
  t7408: merge short tests, factor out testing method
  submodule--helper module-clone: allow multiple references
  submodule--helper update-clone: allow multiple references
  submodule update: add super-reference flag
  clone: reference flag is used for submodules as well

 builtin/clone.c                |  22 ++++--
 builtin/submodule--helper.c    |  45 ++++++++----
 git-submodule.sh               |  12 +++-
 t/t7408-submodule-reference.sh | 153 +++++++++++++++++++++++------------------
 4 files changed, 147 insertions(+), 85 deletions(-)


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