tests/target/issue-3840/version-one_hard-tabs.rs

// rustfmt-hard_tabs: true

impl<
		Target: FromEvent<A> + FromEvent<B>,
		A: Widget2<Ctx = C>,
		B: Widget2<Ctx = C>,
		C: for<'a> CtxFamily<'a>,
	> Widget2 for WidgetEventLifter<Target, A, B>
{
	type Ctx = C;
	type Event = Vec<Target>;
}

mod foo {
	impl<
			Target: FromEvent<A> + FromEvent<B>,
			A: Widget2<Ctx = C>,
			B: Widget2<Ctx = C>,
			C: for<'a> CtxFamily<'a>,
		> Widget2 for WidgetEventLifter<Target, A, B>
	{
		type Ctx = C;
		type Event = Vec<Target>;
	}
}