Re: basic git

[Max Nikulin]

On 01/07/2023 05:15, Samuel Wales wrote:
> On 6/30/23, Max Nikulin wrote:
> > Do you have history of last git commands, e.g. in an emacs eshell
> > buffer? Please, post them.

It is unclear what was the current branch before (a custom local one, 
"bugfix" or "main" tracking the upstream) and whether all local changes 
were committed.

>    502  ado git-pullv # says what's new etc.

I have no idea concerning "ado" and "git-pullv". The "git pull" command 
should add changes from the tracked remote branch to your local one.

>    503  git branch --set-upstream-to=origin/bugfix bugfix
> #i was told to do this.  it worked ok before.  but now it tells me i
> have to do something.

This command was necessary just once per local branch when you were 
switching from the orgmode.org git repository to savannah. Another use 
case is when you want associate a new local branch with a remote one.

>    504  cd $delbig
>    505  cd 9bugfix #symlink

So the commands above and below were executed in unrelated clones.

>    506  git status
>    507  ado git-pullv
>    508  git pull
>    509  git fetch --tags origin #desperation sets in

"git pull" should fetch changes from the remote branch. "git fetch" 
obtains changes for all remote branches (remotes/origin/bugfix, etc.) 
without touching the local one. So "git fetch" should not break anything.

Perhaps you had a branch that was tracking remotes/origin/main, you 
forced to set tracked branch to remotes/origin/bugfix and "git pull" 
failed in the process of merging changes from these branches. Usually 
the reasonable action is to abort by the command suggested in the "git 
status" output to get the state before "git pull".

>    510  git status
>    511  ado git-pullv
> # this is the !@#$ it moment.  should work for sure.  ha ha.
>    512  git clone https://git.savannah.gnu.org/git/emacs/org-mode.git
>    513  mv org-mode ../new
>    514  cd ..
>    515  mv org-mode--vanilla-bugfix--ok-to-pull--xyzzy-nomost
> ../obsolescent--xyzzy-nomost/
>    516  mv new org-mode--vanilla-bugfix--ok-to-pull--xyzzy-nomost
>    517  cd org-mode--vanilla-bugfix--ok-to-pull--xyzzy-nomost

I am lost whether you are in the directory with the fresh clone. I would 
assume it.

>    518  git status
>    519  git gc

Unnecessary in a fresh clone. You may make it impossible recover local 
changes if you run it when you are unsure where you are. Will you throw 
away garbage when you lost some precious thing and there is a chance 
that you put it into the bin with a heap of other stuff?

>    520  git status
>    521  git branch bugfix

This may be a cause of confusion. The default branch of the org 
repository is "main" (am I right?) and in the fresh clone you should be 
on "main". By this command you created a local branch named "bugfix" but 
unrelated to the upstream branch. The current (HEAD) commit of the local 
"bugfix" points to the current commit.

>    522  git status
>    523  git branch
>    524  git checkout bugfix

This would be a correct command that creates local "bugfix" tracking 
remote "bugfix" unless you executed "git branch bugfix" before. Now you 
are on a commit from "main".

>    525  git status
>    526  ado git-pullv
>    527  ado diffoldnew cat .git/config
>    528  git branch --set-upstream-to=origin/bugfix bugfix

I may be wrong with my assumption, but you created local "bugfix" 
pointing to a commit from remotes/origin/main and forced it to track 
remotes/origin/bugfix. The message from your first post is the plausible 
consequence of "git pull" from this state.

If you goal is a clean clone with "bugfix" as the current branch you may do

    git clone https://git.savannah.gnu.org/git/emacs/org-mode.git \
        org-mode--vanilla-bugfix--ok-to-pull--xyzzy-nomost
    cd org-mode--vanilla-bugfix--ok-to-pull--xyzzy-nomost
    git checkout bugfix

Do you need to recover commits with your local changes or your are 
experimenting with clean upstream "bugfix" and "main" branches?