Merge branch 'nd/setup'

* nd/setup: (47 commits)
  setup_work_tree: adjust relative $GIT_WORK_TREE after moving cwd
  git.txt: correct where --work-tree path is relative to
  Revert "Documentation: always respect core.worktree if set"
  t0001: test git init when run via an alias
  Remove all logic from get_git_work_tree()
  setup: rework setup_explicit_git_dir()
  setup: clean up setup_discovered_git_dir()
  t1020-subdirectory: test alias expansion in a subdirectory
  setup: clean up setup_bare_git_dir()
  setup: limit get_git_work_tree()'s to explicit setup case only
  Use git_config_early() instead of git_config() during repo setup
  Add git_config_early()
  git-rev-parse.txt: clarify --git-dir
  t1510: setup case #31
  t1510: setup case #30
  t1510: setup case #29
  t1510: setup case #28
  t1510: setup case #27
  t1510: setup case #26
  t1510: setup case #25
  ...

1 files changed, 21 insertions, 0 deletions

diff --git a/test-subprocess.c b/test-subprocess.c
new file mode 100644
index 0000000000..667d3e5079
--- /dev/null
+++ b/test-subprocess.c
@@ -0,0 +1,21 @@
+#include "cache.h"
+#include "run-command.h"
+
+int main(int argc, char **argv)
+{
+	const char *prefix;
+	struct child_process cp;
+	int nogit = 0;
+
+	prefix = setup_git_directory_gently(&nogit);
+	if (nogit)
+		die("No git repo found");
+	if (!strcmp(argv[1], "--setup-work-tree")) {
+		setup_work_tree();
+		argv++;
+	}
+	memset(&cp, 0, sizeof(cp));
+	cp.git_cmd = 1;
+	cp.argv = (const char **)argv+1;
+	return run_command(&cp);
+}