manual experimentation reveals that this code only works for the command line

although I actually have no idea why that would be the case, as the error for using it in configuration seems inexplicable, since it consults the same list of error codes in the end 🤷

Author: wyattscarpenter

mypy/options.py

@@ -451,7 +451,6 @@ def process_error_codes(self, *, error_callback: Callable[[str], Any]) -> None:
             error_callback(f"Invalid error code(s): {', '.join(sorted(invalid_codes))}")
 
         self.disabled_error_codes |= {error_codes[code] for code in disabled_codes}
-        # TODO: does this also apply for configuration files as well, or just the command line?
         if "all" in enabled_codes:
             self.enabled_error_codes = set(error_codes.values())
         else: