Add "git show-ref" builtin command

diff --git a/environment.c b/environment.c
index e6bd0033b4666f52dc756b6e2b0d5a1745b0c6b9..84d870ca4eca6e202bcbec388e9a299b887f9a12 100644 (file)
--- a/environment.c
+++ b/environment.c
@@ -25,8 +25,9 @@ int zlib_compression_level = Z_DEFAULT_COMPRESSION;
 int pager_in_use;
 int pager_use_color = 1;
 
-static char *git_dir, *git_object_dir, *git_index_file, *git_refs_dir,
-       *git_graft_file;
+static const char *git_dir;
+static char *git_object_dir, *git_index_file, *git_refs_dir, *git_graft_file;
+
 static void setup_git_env(void)
 {
        git_dir = getenv(GIT_DIR_ENVIRONMENT);
@@ -46,10 +47,10 @@ static void setup_git_env(void)
        }
        git_graft_file = getenv(GRAFT_ENVIRONMENT);
        if (!git_graft_file)
-               git_graft_file = strdup(git_path("info/grafts"));
+               git_graft_file = xstrdup(git_path("info/grafts"));
 }
 
-char *get_git_dir(void)
+const char *get_git_dir(void)
 {
        if (!git_dir)
                setup_git_env();