Fix a bug in DictOptionDriver

CHANGELOG.md

@@ -14,7 +14,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
--  Fixed a bug where logging invalid UTF-8 characters in `UnformattedLogDriver` would raise an exception.
+- Fixed a bug where logging invalid UTF-8 characters in `UnformattedLogDriver` would raise an exception.
+- Fixed a bug where fetching an unset option from a `DictOptionDriver` wouldn't register the default value for next time.
 
 ## [0.1.2] - 2024-05-31
 

src/libretro/drivers/options/dict.py

@@ -66,11 +66,13 @@ def get_variable(self, item: bytes) -> bytes | None:
             # For invalid keys, return None
             return None
 
-        if key not in self._variables:
-            # For unset options, return the default value
-            return string_at(self._options_us[key].default_value)
-
-        value = self._variables[key]
+        if key in self._variables:
+            # If we have a value for this option key...
+            value = self._variables[key]
+        else:
+            # Otherwise get the default value and save it to the dict
+            value = string_at(self._options_us[key].default_value)
+            self._variables[key] = value
 
         if value not in (string_at(v.value) for v in self._options_us[key].values if v.value):
             # For invalid values, return None