patch: includes aliases when looking for defaults for booleans

index.js

@@ -129,8 +129,15 @@ module.exports = function (args, opts) {
 		});
 	}
 
+	// Set booleans to false by default.
 	Object.keys(flags.bools).forEach(function (key) {
-		setArg(key, defaults[key] === undefined ? false : defaults[key]);
+		setArg(key, false);
+	});
+	// Overwrite booleans with user supplied defaults.
+	Object.keys(defaults).filter(function (key) {
+		return flags.bools[key] || (aliases[key] ? aliasIsBoolean(key) : false);
+	}).forEach(function (key) {
+		setArg(key, defaults[key]);
 	});
 
 	var notFlags = [];