Fix argument spelling

freqtrade/commands/arguments.py

@@ -37,7 +37,8 @@ ARGS_HYPEROPT = ARGS_COMMON_OPTIMIZE + ["hyperopt", "hyperopt_path",
 
 ARGS_EDGE = ARGS_COMMON_OPTIMIZE + ["stoploss_range"]
 
-ARGS_LIST_STRATEGIES = ["strategy_path", "print_one_column", "print_colorized"]
+ARGS_LIST_STRATEGIES = ["strategy_path", "print_one_column", "print_colorized",
+                        "recursive_strategy_search"]
 
 ARGS_LIST_HYPEROPTS = ["hyperopt_path", "print_one_column", "print_colorized"]
 

freqtrade/commands/cli_options.py

@@ -83,9 +83,9 @@ AVAILABLE_CLI_OPTIONS = {
         action='store_true',
     ),
     "recursive_strategy_search": Arg(
-        '--recursive_strategy_search',
+        '--recursive-strategy-search',
         help='Recursively search for a strategy in the strategies folder.',
-        metavar='store_true',
+        action='store_true',
     ),
     # Main options
     "strategy": Arg(

freqtrade/resolvers/iresolver.py

@@ -44,7 +44,7 @@ class IResolver:
 
     @classmethod
     def build_search_paths(cls, config: Dict[str, Any], user_subdir: Optional[str] = None,
-                           extra_dirs: Optional[List[str]] = None) -> List[Path]:
+                           extra_dirs: List[str] = []) -> List[Path]:
 
         abs_paths: List[Path] = []
         if cls.initial_search_path:
@@ -53,7 +53,6 @@ class IResolver:
         if user_subdir:
             abs_paths.insert(0, config['user_data_dir'].joinpath(user_subdir))
 
-        if extra_dirs:
         # Add extra directory to the top of the search paths
         for dir in extra_dirs:
             abs_paths.insert(0, Path(dir).resolve())