bug#41860: 27.0.91; Can't use `tabulated-list-(narrow|widen)-current-column' on last column

[Eli Zaretskii]

> Date: Sun, 14 Jun 2020 14:41:22 -0700 (PDT)
> From: Drew Adams <drew.adams@oracle.com>
> 
> Use command `buffer-menu' and then try to narrow or widen the rightmost
> column (the file name).  `{' and `}' have no effect (and there isn't
> even any error message or other feedback).

The last column has infinite width, so I don't see how you could make
it wider or narrower.  (I agree that we should consider signaling a
user-error in this case.)

> This is an important use case, especially with a frame or window whose
> width is made to fit the displayed content.

This seems to imply that the use case in which this is somehow an
issue includes more than you've reported.  Can you add to your
description the minimal configuration that could explain why this
behavior seemed to be a problem?

> This isn't a failing only of
> `tabulated-list-(narrow|widen)-current-column'.  It's a failing of the
> current design of `tabulated-list-print-col'.

Any basis for such general claim?  Which design is at fault here?