[PATCH v2 1/4] setup_git_env: print the true $GIT_DIR for debugging

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

Ideally, GIT_DIR_ENVIRONMENT should be set before setup_git_env() is
called and "setup: GIT_DIR defaults to .git" should never be printed
out. If it is printed, $GIT_DIR is set up automatically, unexpectedly,
elsewhere.

Checking for that line is a good way to know if setup code works
properly.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 Second try. Better tests.

 environment.c |    6 +++++-
 1 files changed, 5 insertions(+), 1 deletions(-)

diff --git a/environment.c b/environment.c
index de5581f..e34adc3 100644
--- a/environment.c
+++ b/environment.c
@@ -91,8 +91,12 @@ static void setup_git_env(void)
 		git_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
 		git_dir = git_dir ? xstrdup(git_dir) : NULL;
 	}
-	if (!git_dir)
+	if (!git_dir) {
+		trace_printf("setup: GIT_DIR defaults to .git\n");
 		git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
+	}
+	else
+		trace_printf("setup: GIT_DIR set to %s\n", git_dir);
 	git_object_dir = getenv(DB_ENVIRONMENT);
 	if (!git_object_dir) {
 		git_object_dir = xmalloc(strlen(git_dir) + 9);
-- 
1.7.0.2.445.gcbdb3