Re: [PATCH] git-diff.txt: document return code of `--no-index`

> According to the end of diff_no_index(),
>
> 	/*
> 	 * The return code for --no-index imitates diff(1):
> 	 * 0 = no changes, 1 = changes, else error
> 	 */
> 	return diff_result_code(&revs->diffopt, 0);
>
> However, this is not properly documented in git-diff.txt.
>
> Shamelessly steal from the `--exit-code` text and give it to the
> `--no-index` documentation to explain that the return code is similar to
> diff(1).

> Signed-off-by: Denton Liu <liu.denton@gmail.com>
> ---
>  Documentation/git-diff.txt | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/git-diff.txt b/Documentation/git-diff.txt
> index 72179d993c..1e363bd200 100644
> --- a/Documentation/git-diff.txt
> +++ b/Documentation/git-diff.txt
> @@ -36,7 +36,10 @@ two blob objects, or changes between two files on disk.
>  	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.
> +	controlled by Git. With `--no-index`,
> +	the program exits with codes similar to diff(1). That is, it
> +	exits with 1 if there were differences and 0 means no
> +	differences.

>
>  'git diff' [<options>] --cached [<commit>] [--] [<path>...]::
>
> --
> 2.24.0.rc0.197.g0926ab8072
>
>