Ensure & creates an undo point

Author: J-Fields

src/actions/base.ts

@@ -21,6 +21,10 @@ export abstract class BaseAction {
    */
   public isJump = false;
 
+  /**
+   * TODO: This property is a lie - it pertains to whether an action creates an undo point...
+   *       See #5058 and rationalize ASAP.
+   */
   public canBeRepeatedWithDot = false;
 
   /**
@@ -201,8 +205,6 @@ export abstract class BaseCommand extends BaseAction {
    */
   runsOnceForEachCountPrefix = false;
 
-  canBeRepeatedWithDot = false;
-
   /**
    * Run the command a single time.
    */

src/actions/commands/actions.ts

@@ -851,6 +851,7 @@ class CommandDot extends BaseCommand {
 class CommandRepeatSubstitution extends BaseCommand {
   modes = [Mode.Normal];
   keys = ['&'];
+  canBeRepeatedWithDot = true;
 
   public async exec(position: Position, vimState: VimState): Promise<void> {
     // Parsing the command from a string, while not ideal, is currently