struct startup_info *startup_info;
 unsigned long pack_size_limit_cfg;
 
+/*
+ * The character that begins a commented line in user-editable file
+ * that is subject to stripspace.
+ */
+char comment_line_char = '#';
+
 /* Parallel index stat data preload? */
 int core_preload_index = 0;
 
 static char *git_object_dir, *git_index_file, *git_graft_file;
 
 /*
- * Repository-local GIT_* environment variables
- * Remember to update local_repo_env_size in cache.h when
- * the size of the list changes
+ * Repository-local GIT_* environment variables; see cache.h for details.
  */
-const char * const local_repo_env[LOCAL_REPO_ENV_SIZE + 1] = {
+const char * const local_repo_env[] = {
        ALTERNATE_DB_ENVIRONMENT,
        CONFIG_ENVIRONMENT,
        CONFIG_DATA_ENVIRONMENT,
        DB_ENVIRONMENT,
        GIT_DIR_ENVIRONMENT,
        GIT_WORK_TREE_ENVIRONMENT,
+       GIT_IMPLICIT_WORK_TREE_ENVIRONMENT,
        GRAFT_ENVIRONMENT,
        INDEX_ENVIRONMENT,
        NO_REPLACE_OBJECTS_ENVIRONMENT,
+       GIT_PREFIX_ENVIRONMENT,
        NULL
 };