bug#37941: 26.3.50; Wrong behavior when reverting a tabulated-list-mode buffer with truncated lines

[Eli Zaretskii <eliz@gnu.org>]

> From: Michał Krzywkowski <mkrzywkow@gmail.com>
> Date: Sun, 27 Oct 2019 11:02:39 +0100
> 
> When I revert a regular tabulated-list-mode buffer, the point stays the
> same, and the displayed buffer boundaries remain the same as well.
> 
> However, when the entries in tabulated-list-entries contain strings that
> are too long and will be truncated, reverting such buffer will scroll
> the screen by one line.
> 
> To see this behavior, evaluate in emacs -Q, then type g:
> 
>   (with-current-buffer (generate-new-buffer "test")
>     (require 'cl-lib)
>     (tabulated-list-mode)
>     (setq tabulated-list-format [("No." 5) ("Message" 10)])
>     (let ((message (make-string 100 ?a)))
>       (setq tabulated-list-entries
>             (cl-loop for i from 1 to 100
>                      collect `(,i [,(number-to-string i) ,message]))))
>     (tabulated-list-init-header)
>     (revert-buffer)
>     (forward-line 50)
>     (pop-to-buffer (current-buffer))
>     (recenter))
> 
> You can also see that if the lines are not truncated, the behavior is
> correct.

Thanks, should be fixed now.  Please test.