On Wed, Apr 30, 2014 at 02:34:59PM -0700, Junio C Hamano wrote:
> Linus Torvalds <torva...@linux-foundation.org> writes:
> > I just got a comment saying that
> > git commit --amend --date=now
> > doesn't work. I replied that you can use
> > --date="$(date)"
> Offhand without double-checking the actual codepath I do not have
> objection against approxidate-careful.
This has come up a few times on the list, but nobody ever produced a
patch. To quote myself:
> I think the original rationale was that it's OK for us to allow some
> sloppiness when _viewing_ commits, since you will generally notice the
> problem. But when making commits, it's better to be careful, since you
> may be setting the sha1 in stone.
> These days we have two tools that could help:
> 1. approxidate_careful will do a regular approxidate, but keep track
> of whether we found anything even remotely useful. That doesn't mean
> you can't still get unexpected results, but at least some truly
> useless cases return errors.
> 2. For commits with a different author and committer, we mention the
> author name in the post-commit summary. We could do the same with a
> timestamp that was given (i.e., mentioning it in a standard format)
> to give the user another opportunity to double-check what we parsed.
I think it would make sense if we followed both of those points.
Should we also loosen $GIT_AUTHOR_DATE? I'd prefer not to, as that is
not typically fed by the users themselves, but rather by scripts, and
being robust there may be more valuable.
> But why does the workflow need --date=now in the first place?
> Wouldn't --reset-author do what you want better? What is the
> situation where you want to say that this patch has been changed
> significantly enough from the original to label it with the current
> timestamp without taking the authorship?
In some of the instances on the list, the user simply didn't know that
--reset-author would do the trick. And I do think it's slightly
However, the original rationale for "--date" was to back-date
commits, so even though there is an equivalent for "--date=now", it
might be nice to support "--date=2.days.ago".
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