feat: add --fancy-input flag to control input history and completion

aider/args.py

@@ -688,6 +688,12 @@ def get_parser(default_config_files, git_root):
         default=True,
         help="Enable/disable suggesting shell commands (default: True)",
     )
+    group.add_argument(
+        "--fancy-input",
+        action=argparse.BooleanOptionalAction,
+        default=True,
+        help="Enable/disable fancy input with history and completion (default: True)",
+    )
 
     ##########
     group = parser.add_argument_group("Voice Settings")

aider/main.py

@@ -472,6 +472,7 @@ def main(argv=None, input=None, output=None, force_git_root=None, return_coder=F
             encoding=args.encoding,
             llm_history_file=args.llm_history_file,
             editingmode=editing_mode,
+            fancy_input=args.fancy_input,
         )
 
     io = get_io(args.pretty)