Re: [PATCH 06/13] submodule: move core cmd_update() logic to C

On Tue, Sep 07 2021, Atharva Raykar wrote:

 struct init_cb {
 	const char *prefix;
+	const char *superprefix;
 	unsigned int flags;
 };
-#define INIT_CB_INIT { NULL, 0 }
+#define INIT_CB_INIT { NULL, NULL, 0 }

Since you're doing some cleanup while you're at it, just changing this
in some earlier step to:

    define INIT_CB_INIT { 0 }

Is better, i.e. the NULL-ing out is implicit here. I have an unsubmitted
series that does that across the codebase.

+	.references = STRING_LIST_INIT_DUP, \

We do inits here, and append, but it seems nothing clears this string_list.