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Re: [PATCH] update-server-info: avoid needless overwrites

On Tue, May 14, 2019 at 02:19:36PM +0200, Ævar Arnfjörð Bjarmason wrote:

> Aside from this change, I wonder if making "fetch" optionally "exit 1"
> if no refs were updated would be useful, as in the below WIP. Of course
> it would be better to distinguish errors from "no refs to update".

That seems very sensible to me, as long as it's an optional flag as you
have it here.

> @@ -133,6 +135,8 @@ static struct option builtin_fetch_options[] = {
>  	{ OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules, N_("on-demand"),
>  		    N_("control recursive fetching of submodules"),
>  		    PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules },
> +	OPT_BOOL(0, "exit-code", &exit_code,
> +		 N_("exit successfully if refs are updated")),

I think it makes sense to flip this explanation: "exit non-zero if no
refs are updated" or "treat it as an error if no refs are updated".
Since the default behavior is already to exit successfully in this case. :)

We may also want to advertise a particular result code so callers can
distinguish it from regular die() errors.