bug#47099: Add example of gnus-part-display-hook

[Lars Ingebrigtsen]

積丹尼 Dan Jacobson <jidanni@jidanni.org> writes:

> (info "(gnus) Customizing Articles")
> says
>       You can, of course, write your own functions to be called from
>    ‘gnus-part-display-hook’.  The functions are called narrowed to the
>    part, and you can do anything you like, pretty much.  There is no
>    information that you have to keep in the buffer—you can change
>    everything.
>
> OK, but please add at least one example.

I don't really see how an example of a function that can do...
anything...  would be very helpful here.  Closing.

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