Re: [PATCH v4 1/3] builtin/config: introduce `--default`

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

Jeff King <peff@peff.net> writes:

> On Wed, Apr 04, 2018 at 07:59:12PM -0700, Taylor Blau wrote:
>
>> @@ -286,6 +288,16 @@ static int get_value(const char *key_, const char *regex_)
>>  	config_with_options(collect_config, &values,
>>  			    &given_config_source, &config_options);
>>  
>> +	if (!values.nr && default_value) {
>> +		struct strbuf *item;
>> +		ALLOC_GROW(values.items, values.nr + 1, values.alloc);
>> +		item = &values.items[values.nr++];
>> +		strbuf_init(item, 0);
>> +		if (format_config(item, key_, default_value) < 0) {
>> +			exit(1);
>> +		}
>> +	}
> ...
>
> It's obvious in this toy example, but that config call may be buried
> deep in a script. It'd probably be nicer for that exit(1) to be
> something like:
>
>   die(_("failed to format default config value"));

Together with key_ and default_value, you mean?

>
>> +test_expect_success 'does not allow --default without --get' '
>> +	test_must_fail git config --default quux --unset a >output 2>&1 &&
>> +	test_i18ngrep "\-\-default is only applicable to" output
>> +'
>
> I think "a" here needs to be "a.section". I get:
>
>   error: key does not contain a section: a

"section.var"?  That aside, even with a properly formatted key, I
seem to get an empty output here, so this may need a bit more work.