Re: git and time

[Andreas Ericsson <ae@op5.se>]

Matthew L Foster wrote:
> How can git be
> said to keep an accurate record of history if time is uncertain?
> 

Because git doesn't care about timestamps. It stores them as comments 
(albeit auto-formatted comments) and relies on the dependency chain to 
provide history.

In the same way that contributors are expected to write clear and 
concise commit-messages, they are also expected to keep their system 
clocks somewhat in sync. Sometimes one or the other fails, and this is 
as inevitable as it can be annoying (although commit-messages along the 
line of "fixed some bugs causing some random crashes" for a commit that 
touches 2384 lines are indefinitely worse than a bad timestamp).

What's beautiful about git is that it's designed to present a correct 
history even if random-contributor-X's system clock is out of sync with 
the rest of the world, as it inevitably will be at one point or another. 
It handles content, and the order in which each piece of content was 
added/removed/mutilated/transformed into something else, and it does a 
good job at that.

All that aside though, would you rather have that fix pronto with a bad 
timestamp, or three days later when the contributor had time to set up 
ntp properly?

-- 
Andreas Ericsson                   andreas.ericsson@op5.se
OP5 AB                             www.op5.se
Tel: +46 8-230225                  Fax: +46 8-230231