{"action":"closed","issue":{"url":"https://api.github.com/repos/Homebrew/homebrew/issues/47162","labels_url":"https://api.github.com/repos/Homebrew/homebrew/issues/47162/labels{/name}","comments_url":"https://api.github.com/repos/Homebrew/homebrew/issues/47162/comments","events_url":"https://api.github.com/repos/Homebrew/homebrew/issues/47162/events","html_url":"https://github.com/Homebrew/homebrew/issues/47162","id":123036193,"number":47162,"title":"\"brew tap --list\" shows backtrace","user":{"login":"proski","id":1317472,"avatar_url":"https://avatars.githubusercontent.com/u/1317472?v=3","gravatar_id":"","url":"https://api.github.com/users/proski","html_url":"https://github.com/proski","followers_url":"https://api.github.com/users/proski/followers","following_url":"https://api.github.com/users/proski/following{/other_user}","gists_url":"https://api.github.com/users/proski/gists{/gist_id}","starred_url":"https://api.github.com/users/proski/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/proski/subscriptions","organizations_url":"https://api.github.com/users/proski/orgs","repos_url":"https://api.github.com/users/proski/repos","events_url":"https://api.github.com/users/proski/events{/privacy}","received_events_url":"https://api.github.com/users/proski/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/Homebrew/homebrew/labels/bug","name":"bug","color":"e10c02"}],"state":"closed","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-12-18T22:22:21Z","updated_at":"2015-12-25T18:26:36Z","closed_at":"2015-12-25T18:26:36Z","body":"I would expect `brew tap --list` to show me that the `--list` option is invalid or ambiguous. Instead, it causes a backtrace. I'm running up-to-date Homebrew on up-to-date El Capitan.\r\n```\r\n~ $ brew tap --list\r\nError: undefined method `split' for nil:NilClass\r\nPlease report this bug:\r\n    https://git.io/brew-troubleshooting\r\n/usr/local/Library/Homebrew/tap.rb:22:in `fetch'\r\n/usr/local/Library/Homebrew/cmd/tap.rb:16:in `tap'\r\n/usr/local/Library/brew.rb:143:in `<main>'\r\n```"}}