Re: [PATCH 1/2] Documentation: --no-walk is no-op if range is specified

[Junio C Hamano <gitster@pobox.com>]

Carlos Martín Nieto <cmn@elego.de> writes:

> The existing description can be misleading and cause the reader to
> think that --no-walk will do something if they specify a range in the
> command line instead of a set of revs.
>
> Signed-off-by: Carlos Martín Nieto <cmn@elego.de>
> ---
>  Documentation/rev-list-options.txt | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/Documentation/rev-list-options.txt b/Documentation/rev-list-options.txt
> index 1ae3c89..84e34b1 100644
> --- a/Documentation/rev-list-options.txt
> +++ b/Documentation/rev-list-options.txt
> @@ -622,6 +622,7 @@ These options are mostly targeted for packing of git repositories.
>  --no-walk::
>  
>  	Only show the given revs, but do not traverse their ancestors.
> +	This has no effect if a range is specified.
>  
>  --do-walk::

This is correct as a description of the current behaviour, but I
have to wonder if we should error out when the user explicitly
(i.e. the implicit uses of --no-walk by "show" and "cherry-pick"
need to be treated differently) gives --no-walk and a negative
commit (either by A..B range, or a separate ^A).

Would that break a valid script, and if not, how involved would such
a fix be?