From: Konstantin Khomoutov <kostix@bswap.ru>
Date: Wed, 05 Dec 2018 14:54:20 GMT
Subject: Re: Any way to make git-log to enumerate commits?
Message-ID: <20181205145419.vbbaghzzrnceez45@tigra>
In-Reply-To: <5e5c6d1c-6b3e-c94a-17be-a2af518c1607@yandex.ru>

On Wed, Dec 05, 2018 at 05:22:14PM +0300, Konstantin Kharlamov wrote:

> It would be great if git-log has a formatting option to insert an
> index of the current commit since HEAD.
> 
> It would allow after quitting the git-log to immediately fire up "git
> rebase -i HEAD~index" instead of "git rebase -i
> go-copy-paste-this-long-number-id".

This may have little sense in a general case as the history maintained
by Git is a graph, not a single line. Hence your prospective approach
would only work for cases like `git log` called with the
"--first-parent" command-line option.

Still, for a simple approach you may code it right away yourself.
Say, let's create an alias:

  $ git config alias.foo '!git log "$@" --pretty=oneline --source | {
      n=0;
      while read sha ref rest; do
        printf "%s\t%s~%s\t%s\n" "$sha" "$ref" $n "$rest"
		n=$((n+1))
	  done
    }'

Now calling `git foo --abbrev=commit` would output something like

9be8e297d        HEAD~7       Frobincated fizzle

where "7" is what you're looking for.

A more roubst solution may need to use the `git rev-list` command.