{"action":"opened","issue":{"url":"https://api.github.com/repos/jakubpawlowicz/clean-css/issues/455","labels_url":"https://api.github.com/repos/jakubpawlowicz/clean-css/issues/455/labels{/name}","comments_url":"https://api.github.com/repos/jakubpawlowicz/clean-css/issues/455/comments","events_url":"https://api.github.com/repos/jakubpawlowicz/clean-css/issues/455/events","html_url":"https://github.com/jakubpawlowicz/clean-css/issues/455","id":56894750,"number":455,"title":"parentheses dropped on calc","user":{"login":"koolkatwebdesigns","id":3653239,"avatar_url":"https://avatars.githubusercontent.com/u/3653239?v=3","gravatar_id":"","url":"https://api.github.com/users/koolkatwebdesigns","html_url":"https://github.com/koolkatwebdesigns","followers_url":"https://api.github.com/users/koolkatwebdesigns/followers","following_url":"https://api.github.com/users/koolkatwebdesigns/following{/other_user}","gists_url":"https://api.github.com/users/koolkatwebdesigns/gists{/gist_id}","starred_url":"https://api.github.com/users/koolkatwebdesigns/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/koolkatwebdesigns/subscriptions","organizations_url":"https://api.github.com/users/koolkatwebdesigns/orgs","repos_url":"https://api.github.com/users/koolkatwebdesigns/repos","events_url":"https://api.github.com/users/koolkatwebdesigns/events{/privacy}","received_events_url":"https://api.github.com/users/koolkatwebdesigns/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-02-07T03:03:34Z","updated_at":"2015-02-07T03:03:34Z","closed_at":null,"body":".masonry-item {\r\nwidth: 33.33%;\r\nwidth: -webkit-calc( ( 100% - 12px ) / 3 );\r\nwidth: -moz-calc( ( 100% - 12px) / 3 );\r\nwidth: calc( ( 100% - 12px) / 3 );\r\n}\r\n\r\nbecomes:\r\nmasonry-item{width:33.33%;width:-webkit-calc(100% - 12px) / 3);width:-moz-calc(100% - 12px) / 3);width:calc(100% - 12px) / 3)}\r\n\r\nthe above results in invalid CSS so the calc is ignored\r\n\r\nI am using the grunt task for this and have set advanced to false."}}