[PATCH] Document short responses to qXfer:object:read.

[Eli Zaretskii]

> From: David Taylor <dtaylor@emc.com>
> cc: dtaylor@emc.com
> Date: Thu, 26 May 2016 14:10:37 -0400
> 
> +2016-05-26  David Taylor  <dtaylor@emc.com>
> +
> +	* gdb.texinfo (General Query Packets): Document treatment of short
> +	qXfer responses and EOF indication.
> +
>  2016-05-23  Tom Tromey  <tom@tromey.com>
>  
>  	* python.texi (Basic Python): Document gdb.breakpoints return.
> diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
> index 8f1ad4e..c674c7a 100644
> --- a/gdb/doc/gdb.texinfo
> +++ b/gdb/doc/gdb.texinfo
> @@ -37251,6 +37251,11 @@ starting at @var{offset} bytes into the data.  The content and
>  encoding of @var{annex} is specific to @var{object}; it can supply
>  additional details about what data to access.
>  
> +The target is permitted to return a short response.  The response is
> +considered to cover the range @var{offset} (inclusive) to @var{offset}
> ++ @var{response length} (exclusive).  End of file is indicated by a
> +zero length response.
> +
>  Here are the specific requests of this form defined so far.  All
>  @samp{qXfer:@var{object}:read:@dots{}} requests use the same reply
>  formats, listed below.

Thanks.  However, I have difficulty understanding what this text is
trying to convey.  Problematic words are "permitted" and "short" --
they don't seem to be related to anything around this text, and are
not explained by the text itself.  I also don't see why EOF is
important here, or even related.

Could you perhaps explain in your own words what is this about, and
what the text lacks without this paragraph?  I might then propose a
more clear wording.

Thanks.