{"action":"created","issue":{"url":"https://api.github.com/repos/QuantStack/xeus-cling/issues/67","repository_url":"https://api.github.com/repos/QuantStack/xeus-cling","labels_url":"https://api.github.com/repos/QuantStack/xeus-cling/issues/67/labels{/name}","comments_url":"https://api.github.com/repos/QuantStack/xeus-cling/issues/67/comments","events_url":"https://api.github.com/repos/QuantStack/xeus-cling/issues/67/events","html_url":"https://github.com/QuantStack/xeus-cling/issues/67","id":266242954,"number":67,"title":"Distinction between output and result messages","user":{"login":"nthiery","id":545328,"avatar_url":"https://avatars0.githubusercontent.com/u/545328?v=4","gravatar_id":"","url":"https://api.github.com/users/nthiery","html_url":"https://github.com/nthiery","followers_url":"https://api.github.com/users/nthiery/followers","following_url":"https://api.github.com/users/nthiery/following{/other_user}","gists_url":"https://api.github.com/users/nthiery/gists{/gist_id}","starred_url":"https://api.github.com/users/nthiery/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/nthiery/subscriptions","organizations_url":"https://api.github.com/users/nthiery/orgs","repos_url":"https://api.github.com/users/nthiery/repos","events_url":"https://api.github.com/users/nthiery/events{/privacy}","received_events_url":"https://api.github.com/users/nthiery/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":6,"created_at":"2017-10-17T19:07:16Z","updated_at":"2017-10-18T07:44:40Z","closed_at":null,"author_association":"CONTRIBUTOR","body":"Hi,\r\nI just noticed with @takluyver that the xeus-cling output's are not prefixed with [Out ??] prompts:\r\n```\r\nIn [1] 1 + 1\r\n(int) 2\r\n```\r\ninstead of\r\n```\r\nIn [1] 1 + 1\r\nOut[1] (int) 2\r\n```\r\n\r\nThis suggests that the output messages are not tagged as \"execute_result\" as one would expect.\r\n\r\nPotentially related: we noticed with @gouarin that nbgrader does not pick error messages when grading `xeux-cling` notebooks. @takluyver just mentionned that there are two types of error messages which is a [regular source of confusion between kernels and frontends](https://github.com/jupyter/enhancement-proposals/pull/24). Maybe that's what's happening here, with nbgrader expecting one type, and xeus-cling sending the other."},"comment":{"url":"https://api.github.com/repos/QuantStack/xeus-cling/issues/comments/337488400","html_url":"https://github.com/QuantStack/xeus-cling/issues/67#issuecomment-337488400","issue_url":"https://api.github.com/repos/QuantStack/xeus-cling/issues/67","id":337488400,"user":{"login":"takluyver","id":327925,"avatar_url":"https://avatars3.githubusercontent.com/u/327925?v=4","gravatar_id":"","url":"https://api.github.com/users/takluyver","html_url":"https://github.com/takluyver","followers_url":"https://api.github.com/users/takluyver/followers","following_url":"https://api.github.com/users/takluyver/following{/other_user}","gists_url":"https://api.github.com/users/takluyver/gists{/gist_id}","starred_url":"https://api.github.com/users/takluyver/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/takluyver/subscriptions","organizations_url":"https://api.github.com/users/takluyver/orgs","repos_url":"https://api.github.com/users/takluyver/repos","events_url":"https://api.github.com/users/takluyver/events{/privacy}","received_events_url":"https://api.github.com/users/takluyver/received_events","type":"User","site_admin":false},"created_at":"2017-10-18T07:44:40Z","updated_at":"2017-10-18T07:44:40Z","author_association":"NONE","body":"Is it possible to detect whether execution caused an error or not? If so, it would be useful to send back an indication that the error occurred. There are currently two ways to do that, and we're just working out if it's possible to condense them down to one."}}
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