[PATCH 4/7] setup: skip core.worktree if GIT_DIR is not set

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

---
 setup.c |   10 +++++++---
 1 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/setup.c b/setup.c
index bbb430a..e8273c3 100644
--- a/setup.c
+++ b/setup.c
@@ -4,7 +4,7 @@
 static int inside_git_dir = -1;
 static int inside_work_tree = -1;
 
-static int has_core_worktree, has_core_bare;
+static int has_core_worktree, has_core_bare, has_git_dir_env;
 
 const char *prefix_path(const char *prefix, int len, const char *path)
 {
@@ -460,8 +460,10 @@ static const char *setup_git_directory_gently_1(int *nongit_ok)
 	 * validation.
 	 */
 	gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
-	if (gitdirenv)
-		return setup_explicit_git_dir(gitdirenv, work_tree_env, nongit_ok);
+	if (gitdirenv) {
+		has_git_dir_env = 1;
+		return setup_explicit_git_dir(gitdirenv, work_tree_env, nongit_o, nongit_ok);
+	}
 	else {
 		/* prevent get_git_work_tree() from using it because GIT_DIR is not set */
 		if (work_tree_env)
@@ -593,6 +595,8 @@ int check_repository_format_version(const char *var, const char *value, void *cb
 			has_core_bare = 1;
 		}
 	} else if (strcmp(var, "core.worktree") == 0) {
+		if (!has_git_dir_env) /* only valid when GIT_DIR is set */
+			return 0;
 		if (!value)
 			return config_error_nonbool(var);
 		free(git_work_tree_cfg);
-- 
1.7.0.2.445.gcbdb3