Description Juergen Baier 2020-12-18 09:54:15 EST

Created attachment 285078 [details]
Situation where an existing parameter is overwritten

There are situations where an existing parameter is overwritten by the "completion overwrites" feature (which is a really great, game-changing feature for me :-) ).

Consider:

public class CompletionOverrides {

	public static void main(String[] args) {
		int arg1 = 1;
		int arg2 = 2;
		foo(arg1, arg2);
	}

	enum MyEnum {
		A, B
	}

	static void foo(int arg1, int arg2) {}
}

1) I change the method signature of foo to

	static void foo(MyEnum arg0, int arg1, int arg2) {}

2) I start fixing the existing call to foo. I put the cursor right after the opening parenthesis:

	public static void main(String[] args) {
		int arg1 = 1;
		int arg2 = 2;
		foo( arg1, arg2);
                    |
                    cursor location
	}

I start typing "MyEnum." and now the autocomplete allows me to choose between one of the enum values. But "arg1" is marked in yellow, so when I choose an enum value "arg1" is overwritten and I get:

	public static void main(String[] args) {
		int arg1 = 1;
		int arg2 = 2;
		foo(MyEnum.A, arg2);
	}

I also added a photo of the situation.

I guess it is not easy to detect if a user wants to overwrite an existing value or to add a new value, but at least in my workflow this seems to happen sometimes.