bug#44409: Example in manual no longer works

[Eli Zaretskii]

On November 3, 2020 7:28:41 AM GMT+02:00, "積丹尼 Dan Jacobson" 
<jidanni@jidanni.org> wrote:
> (info "(emacs) Grep Searching") Says
> 
>    For instance, you can chain ‘grep’ commands, like this: ...
> 
> But the example it then gives is for older emacs versions.
> 
> Newer emacs versions' grep string contains "--null" (proof: try
> $ emacs -f grep
> ) which will cause the example to fail.
> 
> How can one rewrite the example to work with newer emacs versions?

I just tried the example in the manual with a recent version of Enacs, and the 
example works just fine.  So in what sense doesn't the example work for you?  
And what is the significance of --null for this purpose?

IOW, I see no reason to rewrite the example.