{"action":"opened","issue":{"url":"https://api.github.com/repos/rvirding/lfe/issues/144","labels_url":"https://api.github.com/repos/rvirding/lfe/issues/144/labels{/name}","comments_url":"https://api.github.com/repos/rvirding/lfe/issues/144/comments","events_url":"https://api.github.com/repos/rvirding/lfe/issues/144/events","html_url":"https://github.com/rvirding/lfe/issues/144","id":103861448,"number":144,"title":"Deprecated pattern warning on empty string","user":{"login":"oubiwann","id":894251,"avatar_url":"https://avatars.githubusercontent.com/u/894251?v=3","gravatar_id":"","url":"https://api.github.com/users/oubiwann","html_url":"https://github.com/oubiwann","followers_url":"https://api.github.com/users/oubiwann/followers","following_url":"https://api.github.com/users/oubiwann/following{/other_user}","gists_url":"https://api.github.com/users/oubiwann/gists{/gist_id}","starred_url":"https://api.github.com/users/oubiwann/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/oubiwann/subscriptions","organizations_url":"https://api.github.com/users/oubiwann/orgs","repos_url":"https://api.github.com/users/oubiwann/repos","events_url":"https://api.github.com/users/oubiwann/events{/privacy}","received_events_url":"https://api.github.com/users/oubiwann/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-08-29T16:20:12Z","updated_at":"2015-08-29T16:20:12Z","closed_at":null,"body":"I'm pretty sure I have a scenario where I'm getting an invalid deprecated pattern warning: it happens when pattern matching on an empty string in function heads.  \r\n\r\nI'm guessing the code that's checking for the deprecated use doesn't take into account that an unquoted``\"\"`` is a valid expression, even though it will be rendered as ``()`` (a deprecated one)."}}