[RFC 0/2] push checks for unpushed remotes in submodules

When working with submodules it is easy to end up in a state when submodule commits required by the super-project only is present locally. This is most often a human error (although technical errors such as connection failure can be a reason).

This patch-series tries to prevent pushing a super-project if not all (by the super-project used) submodules are pushed first. This will prevent the human error of forgetting to push submodules before pushing the super-project.

This is a RFC-series, please consider:
* Is this going into the right direction?
* Should we use a new flag similar to REF_STATUS_REJECT_NONFASTFORWARD?

Future improvements could be:
* Make git status aware of unpushed submodules.
* Show a list of unpushed submodules when a push is denied.

Fredrik Gustafsson (1):
  Don't push a repository with unpushed submodules

Heiko Voigt (1):
  test whether push checks for unpushed remotes in submodules

 submodule.c                    |   79 ++++++++++++++++++++++++++++++++++++++++
 submodule.h                    |    1 +
 t/t5531-deep-submodule-push.sh |   68 ++++++++++++++++++++++++++++++++++
 transport.c                    |    8 ++++
 4 files changed, 156 insertions(+), 0 deletions(-)