On Fri, Apr 6, 2018 at 2:30 AM, Taylor Blau <me@xxxxxxxxxxxx> wrote:
> [...]
> This commit (and those following it in this series) aim to eventually
> replace `--get-color` with a consistent alternative. By introducing
> `--default`, we allow the `--get-color` action to be promoted to a
> `--type=color` type specifier, retaining the "fallback" behavior via the
> `--default` flag introduced in this commit.
>
> For example, we aim to replace:
>
> $ git config --get-color variable [default] [...]
>
> with:
>
> $ git config --default default --type=color variable [...]
>
> Signed-off-by: Taylor Blau <me@xxxxxxxxxxxx>
> ---
> diff --git a/builtin/config.c b/builtin/config.c
> @@ -286,6 +288,16 @@ static int get_value(const char *key_, const char *regex_)
> + 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) {
> + die(_("failed to format default config value"));
> + }
Unnecessary braces.
Also, an error message such as this is typically more helpful when it
shows the item which caused the problem:
die(_("failed to format default config value: %s"), default_value);
However, since the message already says "default", it's pretty easy to
understand that it's talking about the argument to --default, so it's
perhaps not such a big deal in this case.
Anyhow, neither point is worth a re-roll.
> + }
> @@ -624,6 +636,13 @@ int cmd_config(int argc, const char **argv, const char *prefix)
> usage_with_options(builtin_config_usage, builtin_config_options);
> }
>
> +
Unnecessary new blank line.
> + if (default_value && !(actions & ACTION_GET)) {
> + error("--default is only applicable to --get");
> + usage_with_options(builtin_config_usage,
> + builtin_config_options);
> + }
> diff --git a/t/t1310-config-default.sh b/t/t1310-config-default.sh
> @@ -0,0 +1,38 @@
> +test_expect_success 'uses --default when missing entry' '
> + echo quux >expect &&
> + git config -f config --default quux core.foo >actual &&
> + test_cmp expect actual
> +'
>
> +test_expect_success 'canonicalizes --default with appropriate type' '
> + echo true >expect &&
> + git config -f config --default=true --bool core.foo >actual &&
> + test_cmp expect actual
> +'
I would trust this canonicalization test a lot more if it used one of
the aliases for "true" since it doesn't presently prove that
canonicalization is taking place. For instance:
git config -f config --default=yes --bool core.foo >actual &&
> +test_expect_success 'uses entry when available' '
> + echo bar >expect &&
> + git config --add core.foo bar &&
> + git config --default baz core.foo >actual &&
> + git config --unset core.foo &&
> + test_cmp expect actual
> +'
If you happen to re-roll, can we move this test so it immediately
follows the "uses --default when missing entry" test? That's where I
had expected to find it and had even written a review comment saying
so (but deleted the comment once I got down to this spot in the
patch). Also, perhaps rename the test to make it clearer that it
complements the "uses --default when missing entry" test; perhaps
"does not fallback to --default when entry present" or something.
> +test_expect_success 'dies when --default cannot be parsed' '
> + test_must_fail git config -f config --type=expiry-date --default=x --get \
> + not.a.section 2>error &&
> + test_i18ngrep "failed to format default config value" error
> +'
> +
> +test_expect_success 'does not allow --default without --get' '
> + test_must_fail git config --default=quux --unset a.section >output 2>&1 &&
> + test_i18ngrep "\-\-default is only applicable to" output
> +'
