bug#44409: Example in manual no longer works

[積丹尼 Dan Jacobson]

$ grep --color -nH --null -e a /etc/motd
/etc/motd:2:The programs included with the Debian GNU/Linux system are free 
software;
/etc/motd:3:the exact distribution terms for each program are described in 
the...
$ grep --color -nH --null -e a /etc/motd | grep x
Binary file (standard input) matches

>>>>> "EZ" == Eli Zaretskii <eliz@gnu.org> writes:
EZ> And what is the significance of --null for this purpose?

     grep -nH -e

is not the current emacs prompt. It is an older emacs prompt.

The current emacs prompt is

     grep --color -nH --null -e

You can verify this via
$ emacs -f grep