Re: [PATCH] revisions.txt: mention <rev>~ form

> @@ -139,7 +139,9 @@ thing no matter the case.
>    '<rev>{caret}0' means the commit itself and is used when '<rev>' is the
>    object name of a tag object that refers to a commit object.
>  
> -'<rev>{tilde}<n>', e.g. 'master{tilde}3'::
> +'<rev>{tilde}[<n>]', e.g. 'HEAD~, master{tilde}3'::

> +  A suffix '{tilde}' to a revision parameter means the first parent of
> +  that commit object.
>    A suffix '{tilde}<n>' to a revision parameter means the commit
>    object that is the <n>th generation ancestor of the named
>    commit object, following only the first parents.  I.e. '<rev>{tilde}3' is