Re: [PATCHv2] git-diff: Clarify operation when not inside a repository.

> diff --git a/Documentation/git-diff.txt b/Documentation/git-diff.txt
> index b1630ba..33fbd8c 100644
> --- a/Documentation/git-diff.txt
> +++ b/Documentation/git-diff.txt
> @@ -28,11 +28,15 @@ two blob objects, or changes between two files on disk.
>  	words, the differences are what you _could_ tell Git to
>  	further add to the index but you still haven't.  You can
>  	stage these changes by using linkgit:git-add[1].
> -+
> -If exactly two paths are given and at least one points outside
> -the current repository, 'git diff' will compare the two files /
> -directories. This behavior can be forced by --no-index or by
> -executing 'git diff' outside of a working tree.
> +
> +'git diff' --no-index [--options] [--] [<path>...]::
> +
> +	This form is to compare the given two paths on the
> +	filesystem.  You can omit the `--no-index` option when
> +	running the command in a working tree controlled by Git and
> +	at least one of the paths points outside the working tree,
> +	or when running the command outside a working tree
> +	controlled by Git.