{"action":"opened","issue":{"url":"https://api.github.com/repos/sass/libsass/issues/1975","repository_url":"https://api.github.com/repos/sass/libsass","labels_url":"https://api.github.com/repos/sass/libsass/issues/1975/labels{/name}","comments_url":"https://api.github.com/repos/sass/libsass/issues/1975/comments","events_url":"https://api.github.com/repos/sass/libsass/issues/1975/events","html_url":"https://github.com/sass/libsass/issues/1975","id":145841563,"number":1975,"title":"`:not(selector)` is expanded incorrectly","user":{"login":"calvin","id":5280,"avatar_url":"https://avatars.githubusercontent.com/u/5280?v=3","gravatar_id":"","url":"https://api.github.com/users/calvin","html_url":"https://github.com/calvin","followers_url":"https://api.github.com/users/calvin/followers","following_url":"https://api.github.com/users/calvin/following{/other_user}","gists_url":"https://api.github.com/users/calvin/gists{/gist_id}","starred_url":"https://api.github.com/users/calvin/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/calvin/subscriptions","organizations_url":"https://api.github.com/users/calvin/orgs","repos_url":"https://api.github.com/users/calvin/repos","events_url":"https://api.github.com/users/calvin/events{/privacy}","received_events_url":"https://api.github.com/users/calvin/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2016-04-05T00:18:36Z","updated_at":"2016-04-05T00:18:36Z","closed_at":null,"body":"`&:not(selector)` is expanded to `&:not(selector, selector)`. Please see my input, actual output and expected output below. However, I cannot reproduce this problem on http://www.sassmeister.com.\r\n\r\n\r\nVersions:\r\n```\r\n$ node-sass --version\r\nnode-sass\t3.5.0-beta.1\t(Wrapper)\t[JavaScript]\r\nlibsass  \t3.3.3\t(Sass Compiler)\t[C/C++]\r\n```\r\n\r\nSASS source:\r\n```sass\r\n\r\n#footer {\r\n\tnav {\r\n\t\t...\r\n\t\t@at-root #leftButton, #rightButton {\r\n\t\t\t...\r\n\t\t\t&:not(.none):active {\r\n\t\t\t\tbackground-color: green;\r\n\t\t\t}\r\n\t\t}\r\n\t}\r\n}\r\n```\r\n\r\nTranspiled CSS:\r\n```CSS\r\n    #leftButton:not(.none, .none):active, #rightButton:not(.none, .none):active {\r\n      background-color: green; }\r\n```\r\n\r\nExpected CSS:\r\n```CSS\r\n    #leftButton:not(.none):active, #rightButton:not(.none):active {\r\n      background-color: green; }\r\n```"}}