do not write null sha1s to on-disk index

diff --git a/environment.c b/environment.c
index d60b73f6a5a88632a2a36140bf719484adec9f39..c93b8f44df0171a0f923546813d00e8b8e837af1 100644 (file)
--- a/environment.c
+++ b/environment.c
@@ -9,6 +9,7 @@
  */
 #include "cache.h"
 #include "refs.h"
+#include "fmt-merge-msg.h"
 
 char git_default_email[MAX_GITNAME];
 char git_default_name[MAX_GITNAME];
@@ -59,7 +60,9 @@ enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
 char *notes_ref_name;
 int grafts_replace_parents = 1;
 int core_apply_sparse_checkout;
+int merge_log_config = -1;
 struct startup_info *startup_info;
+unsigned long pack_size_limit_cfg;
 
 /* Parallel index stat data preload? */
 int core_preload_index = 0;
@@ -107,7 +110,7 @@ static char *expand_namespace(const char *raw_namespace)
                if (strcmp((*c)->buf, "/") != 0)
                        strbuf_addf(&buf, "refs/namespaces/%s", (*c)->buf);
        strbuf_list_free(components);
-       if (check_ref_format(buf.buf) != CHECK_REF_FORMAT_OK)
+       if (check_refname_format(buf.buf, 0))
                die("bad git namespace path \"%s\"", raw_namespace);
        strbuf_addch(&buf, '/');
        return strbuf_detach(&buf, NULL);