Re: [PATCH v2 1/3] parse_insn_line(): improve error message when parsing failed

> From: Johannes Schindelin <johannes.schindelin@gmx.de>
>
> In the case that a `get_oid()` call failed, we showed some rather bogus
> part of the line instead of the precise string we sent to said function.
> That makes it rather hard for users to understand what is going wrong,
> so let's fix that.
>
> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
> ...
> @@ -2125,11 +2127,10 @@ static int parse_insn_line(struct repository *r, struct todo_item *item,
>  	item->arg_len = (int)(eol - bol);
>  
>  	if (status < 0)
> -		return error(_("could not parse '%.*s'"),
> -			     (int)(end_of_object_name - bol), bol);
> +		return status;
>  
>  	item->commit = lookup_commit_reference(r, &commit_oid);
> -	return !item->commit;
> +	return item->commit ? 0 : -1;