> From: Junio C Hamano <gits...@pobox.com>
> 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.
> -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.
That does break out the --no-index case in a clearer way.
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