poor formatting of some if/else expressions with hard_tabs = true

With hard_tabs = true, the formatting of some if/else expressions is shifted one level of indentation to the left. Everything works as expected when hard_tabs = false.

Input

fn main() {
    let condition_a = true;
    let condition_b = false;
    let x = 123.456789
        + if condition_a {
            x + y + z + w
        } else {
            123.456789
        }
        + if condition_b {
            x - y - z - w
        } else {
            123.456789
        };
}

Output

The issue is the last three lines of the main() function are indented one level less than expected.

fn main() {
	let condition_a = true;
	let condition_b = false;
	let x = 123.456789
		+ if condition_a {
			x + y + z + w
		} else {
			123.456789
		} + if condition_b {
		x - y - z - w
	} else {
		123.456789
	};
}

Expected output

fn main() {
	let condition_a = true;
	let condition_b = false;
	let x = 123.456789
		+ if condition_a {
			x + y + z + w
		} else {
			123.456789
		} + if condition_b {
			x - y - z - w
		} else {
			123.456789
		};
}

Meta

• rustfmt version: rustfmt 1.4.24-stable (eb894d5 2020-11-05)
• From where did you install rustfmt?: rustup