1<===> same/input.scss 2a {b: selector-unify(".c", ".c")} 3 4<===> same/output.css 5a { 6 b: .c; 7} 8 9<===> 10================================================================================ 11<===> different/input.scss 12a {b: selector-unify(".c", ".d")} 13 14<===> different/output.css 15a { 16 b: .c.d; 17} 18