Introduce is_bare_repository() and core.bare configuration variable

This removes the old is_bare_git_dir(const char *) to ask if a
directory, if it is a GIT_DIR, is a bare repository, and
replaces it with is_bare_repository(void *).  The function looks
at core.bare configuration variable if exists but uses the old
heuristics: if it is ".git" or ends with "/.git", then it does
not look like a bare repository, otherwise it does.

Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 7 insertions, 2 deletions

diff --git a/environment.c b/environment.c
index 64245e77a9..54c22f8248 100644
--- a/environment.c
+++ b/environment.c
@@ -15,6 +15,7 @@ int use_legacy_headers = 1;
 int trust_executable_bit = 1;
 int assume_unchanged;
 int prefer_symlink_refs;
+int is_bare_repository_cfg = -1; /* unspecified */
 int log_all_ref_updates = -1; /* unspecified */
 int warn_ambiguous_refs = 1;
 int repository_format_version;
@@ -53,9 +54,13 @@ static void setup_git_env(void)
 		git_graft_file = xstrdup(git_path("info/grafts"));
 }
 
-int is_bare_git_dir(const char *dir)
+int is_bare_repository(void)
 {
-	const char *s;
+	const char *dir, *s;
+	if (0 <= is_bare_repository_cfg)
+		return is_bare_repository_cfg;
+
+	dir = get_git_dir();
 	if (!strcmp(dir, DEFAULT_GIT_DIR_ENVIRONMENT))
 		return 0;
 	s = strrchr(dir, '/');