1 -- turn into single negation --
5 if !b1 { // want `negating a boolean twice`
9 if b1 && !b2 { // want `negating a boolean twice`
13 if !b1 { // want `negating a boolean twice`
26 -- remove double negation --
29 func fn(b1, b2 bool) {
30 if b1 { // want `negating a boolean twice`
34 if b1 && b2 { // want `negating a boolean twice`
38 if b1 { // want `negating a boolean twice`