@@ -265,6 +265,7 @@ def collect_keymap(self) -> tuple[tuple[KeySpec, CommandName], ...]:
             (r"\C-s", "forward-history-isearch"),
             (r"\M-r", "restore-history"),
             (r"\M-.", "yank-arg"),
+            (r"\M-_", "yank-arg"),
             (r"\<page down>", "history-search-forward"),
             (r"\x1b[6~", "history-search-forward"),
             (r"\<page up>", "history-search-backward"),
 
@@ -0,0 +1 @@
+Bind ``yank-arg`` to :kbd:`M-_` in the REPL.
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	+Bind ``yank-arg`` to :kbd:`M-_` in the REPL.