Re: Silly "git gc" UI issue.

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

Simon Ruderich <simon@ruderich.org> writes:

> On Thu, Apr 19, 2018 at 10:52:47AM +0900, Junio C Hamano wrote:
>> It turns out that prune silently goes away given a bad expiry
>>
>>     $ git prune --expire=nyah ; echo $?
>>     129
>
> I noticed that git log --since/--after/--before/--until have a
> similar behavior and ignore date parsing errors in those options
> completely. Is this expected or should we warn the user with
> something like the following?

I do not have a strong opinion on this, because I would expect that
"git log --since=nyah" to do whatever random things it may want to
do.

But I suspect I am a minority, and if we were to change the
established behaviour, I agree that erroring out using
approxidate_careful() is the right direction to go in.

Thanks.

> diff --git a/revision.c b/revision.c
> index 4e0e193e57..e5ba6c7dfc 100644
> --- a/revision.c
> +++ b/revision.c
> @@ -1794,19 +1794,31 @@ static int handle_revision_opt(struct rev_info *revs, int argc, const char **arg
>  		revs->max_age = atoi(optarg);
>  		return argcount;
>  	} else if ((argcount = parse_long_opt("since", argv, &optarg))) {
> -		revs->max_age = approxidate(optarg);
> +		int err = 0;
> +		revs->max_age = approxidate_careful(optarg, &err);
> +		if (err)
> +			return error("--since: invalid time '%s'", optarg);
>  		return argcount;
>  	} else if ((argcount = parse_long_opt("after", argv, &optarg))) {
> -		revs->max_age = approxidate(optarg);
> +		int err = 0;
> +		revs->max_age = approxidate_careful(optarg, &err);
> +		if (err)
> +			return error("--after: invalid time '%s'", optarg);
>  		return argcount;
>  	} else if ((argcount = parse_long_opt("min-age", argv, &optarg))) {
>  		revs->min_age = atoi(optarg);
>  		return argcount;
>  	} else if ((argcount = parse_long_opt("before", argv, &optarg))) {
> -		revs->min_age = approxidate(optarg);
> +		int err = 0;
> +		revs->min_age = approxidate_careful(optarg, &err);
> +		if (err)
> +			return error("--before: invalid time '%s'", optarg);
>  		return argcount;
>  	} else if ((argcount = parse_long_opt("until", argv, &optarg))) {
> -		revs->min_age = approxidate(optarg);
> +		int err = 0;
> +		revs->min_age = approxidate_careful(optarg, &err);
> +		if (err)
> +			return error("--until: invalid time '%s'");
>  		return argcount;
>  	} else if (!strcmp(arg, "--first-parent")) {
>  		revs->first_parent_only = 1;
>
> Regards
> Simon