:Listundo Command [LISTU]
Displays the complete Undo change log of commands that modified text, starting with the most recent and working backward.
LISTUNDO
Listundo shows the complete Undo change log, including each command, the number of lines updated, deleted, added, or renumbered by that command, and the text lines. Text for deleted lines is preceded by an underscore ("_") as in the Delete command, and the "before" value of lines that were updated has a Greater Than ">".
Commands are printed in reverse order, with the most recent command first. This is the command that would undone by the next Undo command. To stop the Listundo report, use Control-Y.
Examples
/listundo