Strip trailing > prompt from embedded z-machine output

src/mudlib/embedded_if_session.py

@@ -36,6 +36,17 @@ class EmbeddedIFSession:
         self._zmachine = ZMachine(story_bytes, self._ui)
         self._filesystem = self._ui.filesystem
 
+    def _strip_prompt(self, output: str) -> str:
+        """Strip trailing > prompt from game output (matches dfrotz behavior)."""
+        text = output.rstrip()
+        if text.endswith("\n>"):
+            return text[:-2].rstrip()
+        if text == ">":
+            return ""
+        if text.endswith(">"):
+            return text[:-1].rstrip()
+        return output
+
     @property
     def save_path(self) -> Path:
         safe_name = re.sub(r"[^a-zA-Z0-9_-]", "_", self.player.name)
@@ -100,6 +111,7 @@ class EmbeddedIFSession:
             # buffer), producing unwanted output. Suppress it and only show the
             # restore confirmation.
             return "restoring saved game...\r\nrestored."
+        output = self._strip_prompt(output)
         return output
 
     async def handle_input(self, text: str) -> IFResponse:
@@ -130,6 +142,7 @@ class EmbeddedIFSession:
         await loop.run_in_executor(None, wait_for_next_input)
 
         output = self._screen.flush()
+        output = self._strip_prompt(output)
         if self._done and self._error:
             output = f"{output}\r\n{self._error}" if output else self._error
         return IFResponse(output=output, done=self._done)