feat: add clear_all function that clears screen and scrollback

Author: sharmaigne

Lib/_pyrepl/unix_console.py

@@ -561,6 +561,11 @@ def clear(self):
         self.posxy = 0, 0
         self.screen = []
 
+    def clear_all(self) -> None:
+        """Clear screen and scrollback buffer."""
+        self.__write("\x1b[3J\x1b[2J\x1b[H")
+        self.clear()
+
     @property
     def input_hook(self):
         # avoid inline imports here so the repl doesn't get flooded

Lib/_pyrepl/windows_console.py

@@ -111,6 +111,7 @@ def __init__(self, err: int | None, descr: str | None = None) -> None:
 MOVE_UP = "\x1b[{}A"
 MOVE_DOWN = "\x1b[{}B"
 CLEAR = "\x1b[H\x1b[J"
+CLEAR_ALL= "\x1b[3J\x1b[2J\x1b[H"
 
 # State of control keys: https://learn.microsoft.com/en-us/windows/console/key-event-record-str
 ALT_ACTIVE = 0x01 | 0x02
@@ -516,6 +517,12 @@ def clear(self) -> None:
         self.posxy = 0, 0
         self.screen = [""]
 
+
+    def clear_all(self) -> None:
+        """Clear screen and scrollback buffer."""
+        self.__write(CLEAR_ALL)
+        self.clear()
+
     def finish(self) -> None:
         """Move the cursor to the end of the display and otherwise get
         ready for end.  XXX could be merged with restore?  Hmm."""