Jeff King <p...@peff.net> writes:
> But if you are OK to eventually stop dying, I think this line of
> reasoning is OK.
>
>> diff --git a/builtin/log.c b/builtin/log.c
>> index 4c4e6be..3b568a1 100644
>> --- a/builtin/log.c
>> +++ b/builtin/log.c
>> @@ -148,6 +148,9 @@ static void cmd_log_init_finish(int argc, const char
>> **argv, const char *prefix,
>> rev->diffopt.output_format |= DIFF_FORMAT_NO_OUTPUT;
>> argc = setup_revisions(argc, argv, rev, opt);
>>
>> + if (!rev->pending.nr && !opt->def)
>> + die("you do not have a commit yet on your branch");
>
> Do we want to mention the name of the branch here? I guess it does not
> really matter. Perhaps "the current branch" would be better than "your
> branch", though. Maybe:
>
> fatal: you do not have any commits yet on the current branch
>
> This message hopefully goes away in the long run, but we'll have it for
> a while.
>
>> +static void default_to_head_if_exists(struct setup_revision_opt *opt)
>> +{
>> + unsigned char unused[20];
>> +
>> + if (resolve_ref_unsafe("HEAD", RESOLVE_REF_READING, unused, NULL))
>> + opt->def = "HEAD";
>> +}
>
> This approach looks sane to me. Want to wrap it up with a commit
> message and a test?
There is an unmerged attempt jc/log-missing-default-HEAD in my
"broken-out" repository https://github.com/gitster/git; I do agree
that we should spend more cycles after deciding to error out to
give a more detailed diagnosis, but I didn't have enough energy
to bring myself do that, so I've tentatively merged your version
instead of this one.
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