Thread (28 messages) flat view 28 messages, 10 authors, 2016-06-15

Re: [PATCH 3/3] prevent HEAD reflog to be interpreted as current branch reflog

From: Johannes Schindelin <hidden>
Date: 2016-06-15 22:42:52

Possibly related (same subject, not in this thread)

Hi,

On Mon, 5 Feb 2007, Shawn O. Pearce wrote:
Johannes Schindelin [off-list ref] wrote:
quoted
On Fri, 2 Feb 2007, Lars Hjemli wrote:
quoted
I think the following makes perfect sense:

 "HEAD@{yesterday}" = current branch, yesterday
 "@{yesterday}"     = detached head (no branch), yesterday
Okay, so you say "HEAD@{yesterday}" does _not_ give you what HEAD pointed 
to yesterday, but "@{yesterday}" does?

Instead "HEAD@{yesterday}" looks up what HEAD points to _now_, and _then_ 
goes back to yesterday, finding out what that particular branch pointed to 
then, _regardless_ what HEAD was then?

Oh my, that's convoluted.
Depends on your point of view:

  HEAD: 1) noun.  Synonym for the branch I am currently on.
  HEAD: 2) noun.  Synonym for the commit I am currently on.
HEAD: 3) noun. The tip of the current branch.
HEAD: 4) noun. The part of the body I am right now banging on the wall.
Now that we can detach our HEAD anytime we want, I'm in the latter camp, 
and your (Dscho's) meaning for HEAD@{yesterday} and @{yesterday} makes 
perfect sense.

But I suspect most Git users are still in the former camp, as they 
haven't been exposed to the process (or need, or desire) to detach their 
HEAD...
But has _nothing_ to do with a detachable HEAD.

Once people know what HEAD is, they do

	git show HEAD

to see what the tip of their current branch looks like. Now, read out 
aloud "HEAD@{12:00.pm.yesterday}". Yes, that's right. It says "HEAD at 
noon yesterday".

I mean, it's really easy to see what HEAD is good for. If your head 
automatically resolved HEAD to "the current branch, right now, even if I 
am talking about another time", I find it convoluted.

That's all.

Ciao,
Dscho
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