RE: Millisecond precision in timestamps?
- From
Jason Pyeron <jpyeron@pdinc.us>
- Date
- Nov 28, 2012, 01:29 UTC
- Message-ID
- <EE15DF282E7C4196A32EE0818A64E35D@black>
- In-Reply-To
- <20121128011750.GA23498@sigill.intra.peff.net>
Show 41 quoted lines
> -----Original Message----- > From: Jeff King > Sent: Tuesday, November 27, 2012 20:18 > > On Tue, Nov 27, 2012 at 05:07:34PM -0800, Shawn O. Pearce wrote: > > > On Tue, Nov 27, 2012 at 4:26 PM, Felipe Contreras > > <felipe.contreras@gmail.com> wrote: > > > On Wed, Nov 28, 2012 at 1:12 AM, Eric S. Raymond > <esr@thyrsus.com> wrote: > > >> Shawn Pearce <spearce@spearce.org>: > > >>> Well... if we added a fractional seconds to a commit, older > > >>> versions of Git will scream loudly and refuse to work > with the new > > >>> commit. That would create a fork of Git. > > >> > > >> So much for that idea, I guess. > > >> > > >> Unless..I don't know how git's database representations > work. Are > > >> they version-stamped in any way? If so, some slightly painful > > >> hackery would get around that problem. > > > > > > % git cat-file -p HEAD > > > > > > You'll see exactly how git stores commits. Changing anything in > > > there must be done carefully. > > > > Apparently there is no room to change in these fields > without breaking > > compatibility with all current versions of Git. So its not > just done > > carefully... its deciding to make Git 2.0 that is not > compatible with > > any Git 1.x release. > > There is room for new headers, and older versions of git will > ignore them. You could add a new "committer-timestamp" field > that elaborates on the timestamp included on the committer > line. Newer versions of git would respect it, and older > versions would fall back to using the committer timestamp.
Suggestion add a ms offset field. Ex:
jpyeron@black /projects/git/git $ git cat-file -p HEAD tree 1e24acfbfcc05aa57e8cb2cfe3ffe01cb100961d parent e98fa647aa5673cc95b6e9be1fdc13c0afa2cb37 author Junio C Hamano <gitster@pobox.com> 1350495361 -0700 committer Junio C Hamano <gitster@pobox.com> 1350495402 -0700 mstimestamps author 0 committer 1234
Git 1.7.12.4
Signed-off-by: Junio C Hamano <gitster@pobox.com>
> > But I really wonder if anybody actually cares about adding > sub-second timestamp support, or if it is merely "because SVN has it".
Not because subversion has it but because date != git(precisedate) and some automation using git in a larger enterprise workflow may assume that date 1354065991.1234 going in should be the same when queried.
-Jason
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