Strip dfrotz prompt even with trailing whitespace

src/mudlib/if_session.py

@@ -203,16 +203,21 @@ class IFSession:
                 buf += chunk
 
                 # Check for prompt at end of buffer
-                text = buf.decode("latin-1")
+                # dfrotz prompt is "\n> " (with trailing space)
+                text = buf.decode("latin-1").rstrip()
                 if text.endswith("\n>"):
-                    text = text[:-2]
-                    return text.rstrip()
+                    return text[:-2].rstrip()
                 if text == ">":
                     return ""
         except TimeoutError:
             pass
 
-        return buf.decode("latin-1").rstrip()
+        text = buf.decode("latin-1").rstrip()
+        if text.endswith("\n>"):
+            return text[:-2].rstrip()
+        if text == ">":
+            return ""
+        return text
 
 
 async def broadcast_to_spectators(player: "Player", message: str) -> None: