Re: [PATCH v2 4/4] bundle: show progress on "unbundle"

> On 8/23/2021 7:02 AM, Ævar Arnfjörð Bjarmason wrote:
>> The "unbundle" command added in 2e0afafebd8 (Add git-bundle: move
>> objects and references by archive, 2007-02-22) did not show progress
>> output, even though the underlying API learned how to show progress in
>> be042aff24c (Teach progress eye-candy to fetch_refs_from_bundle(),
>> 2011-09-18).
>> 
>> Now we'll show "Unbundling objects" using the new --progress-title
>> option to "git index-pack", to go with its existing "Receiving
>> objects" and "Indexing objects" (which it shows when invoked with
>> "--stdin", and with a pack file, respectively).
>> 
>> Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
>> ---
>>  builtin/bundle.c | 11 +++++++++++
>>  1 file changed, 11 insertions(+)
>> 
>> diff --git a/builtin/bundle.c b/builtin/bundle.c
>> index 10f6f45770a..f027cce3fef 100644
>> --- a/builtin/bundle.c
>> +++ b/builtin/bundle.c
>> @@ -162,7 +162,11 @@ static int cmd_bundle_unbundle(int argc, const char **argv, const char *prefix)
>>  	struct bundle_header header = BUNDLE_HEADER_INIT;
>>  	int bundle_fd = -1;
>>  	int ret;
>> +	int progress = isatty(2);
>> +
>>  	struct option options[] = {
>> +		OPT_BOOL(0, "progress", &progress,
>> +			 N_("show progress meter")),
>
> We should probably update Documentation/git-bundle.txt, specifically
> the synopsis, which currently reads:
>
> 'git bundle' create [-q | --quiet | --progress | --all-progress] [--all-progress-implied]
> 		    [--version=<version>] <file> <git-rev-list-args>
> 'git bundle' verify [-q | --quiet] <file>
> 'git bundle' list-heads <file> [<refname>...]
> 'git bundle' unbundle <file> [<refname>...]
>
> Add [--progress] to the unbundle line. The --progress option is
> documented further down in the file, although it is confusing
> where it applies.

>> +
>> +	if (progress) {
>> +		strvec_push(&extra_args, "-v");
>> +		strvec_push(&extra_args, "--progress-title");
>> +		strvec_push(&extra_args, _("Unbundling objects"));
>
> If the previous patch changes to match the --progress-title=X
> pattern of the other options in index-pack, then these two lines
> will need to change, probably to a strvec_pushf().
>
>> +	}
>> +
>>  	ret = !!unbundle(the_repository, &header, bundle_fd, &extra_args) ||
>
> Since this is the first real use of extra_args, as I mentioned
> before it would not be the end of the world to have extra_args
> appear for the first time within this patch.