[PATCH 0/2] Support relative .git file in a submodule

[Brad King <brad.king@kitware.com>]

While experimenting with submodules I discovered that if a submodule
has a .git file "symlink" with a relative path to the real submodule
repository then it cannot be added to the superproject:

$ git init
$ mkdir sub
$ cd sub
$ git init
$ mv .git .real
$ echo 'gitdir: .real' > .git
$ echo a > a
$ git add a
$ git commit -m a
$ cd ..
$ git add sub
fatal: Not a git repository: .real

This patch series adds a test demonstrating the problem, and then
fixes it.

Brad King (2):
  Test update-index for a gitlink to a .git file
  Handle relative paths in submodule .git files

 setup.c                         |   17 +++++++++++++++++
 t/t2104-update-index-gitfile.sh |   38 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 55 insertions(+), 0 deletions(-)
 create mode 100755 t/t2104-update-index-gitfile.sh