Re: [PATCH v2 1/3] teach log --no-walk=unsorted, which avoids sorting

> When 'git log' is passed the --no-walk option, no revision walk takes
> place, naturally. Perhaps somewhat surprisingly, however, the provided
> revisions still get sorted by commit date. So e.g 'git log --no-walk
> HEAD HEAD~1' and 'git log --no-walk HEAD~1 HEAD' give the same result
> (unless the two revisions share the commit date, in which case they
> will retain the order given on the command line). As the commit that
> introduced --no-walk (8e64006 (Teach revision machinery about
> --no-walk, 2007-07-24)) points out, the sorting is intentional, to
> allow things like
>
>  git log --abbrev-commit --pretty=oneline --decorate --all --no-walk
>
> to show all refs in order by commit date.
>
> But there are also other cases where the sorting is not wanted, such
> as
>
>  <command producing revisions in order> |
>        git log --oneline --no-walk --stdin
>
> To accomodate both cases, leave the decision of whether or not to sort
> up to the caller, by allowing --no-walk={sorted,unsorted}, defaulting
> to 'sorted' for backward-compatibility reasons.
>
> Signed-off-by: Martin von Zweigbergk <martinvonz@gmail.com>
> ---