Re: [GSoC][PATCH v2 2/4] submodule--helper: introduce for_each_submodule()

[Junio C Hamano <gitster@pobox.com>]

Prathamesh Chavan <pc44800@gmail.com> writes:

> +typedef void (*submodule_list_func_t)(const struct cache_entry *list_item,
> +				      void *cb_data);
> +
>  static char *get_default_remote(void)
>  {
>  	char *dest = NULL, *ret;
> @@ -353,17 +356,30 @@ static int module_list(int argc, const char **argv, const char *prefix)
>  	return 0;
>  }
>  
> -static void init_submodule(const char *path, const char *prefix, int quiet)
> +static void for_each_submodule(const struct module_list *list,
> +			       submodule_list_func_t fn, void *cb_data)

In the output from

	$ git grep for_each \*.h

we find that the convention is that an interator over a group of X
is for_each_X, the callback function that is given to for_each_X is
of type each_X_fn.  An interator over a subset of group of X that
has trait Y, for_each_Y_X() iterates and calls back a function of
type each_X_fn (e.g. for_each_tag_ref() still calls each_ref_fn).

I do not offhand think of a reason why the above code need to
deviate from that pattern.