{"action":"created","issue":{"url":"https://api.github.com/repos/mathjax/mathjax-v3/issues/103","repository_url":"https://api.github.com/repos/mathjax/mathjax-v3","labels_url":"https://api.github.com/repos/mathjax/mathjax-v3/issues/103/labels{/name}","comments_url":"https://api.github.com/repos/mathjax/mathjax-v3/issues/103/comments","events_url":"https://api.github.com/repos/mathjax/mathjax-v3/issues/103/events","html_url":"https://github.com/mathjax/mathjax-v3/pull/103","id":319607176,"number":103,"title":"Fix problem with \\xrightarrow not stretching.","user":{"login":"dpvc","id":432782,"avatar_url":"https://avatars2.githubusercontent.com/u/432782?v=4","gravatar_id":"","url":"https://api.github.com/users/dpvc","html_url":"https://github.com/dpvc","followers_url":"https://api.github.com/users/dpvc/followers","following_url":"https://api.github.com/users/dpvc/following{/other_user}","gists_url":"https://api.github.com/users/dpvc/gists{/gist_id}","starred_url":"https://api.github.com/users/dpvc/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/dpvc/subscriptions","organizations_url":"https://api.github.com/users/dpvc/orgs","repos_url":"https://api.github.com/users/dpvc/repos","events_url":"https://api.github.com/users/dpvc/events{/privacy}","received_events_url":"https://api.github.com/users/dpvc/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":7,"created_at":"2018-05-02T15:42:06Z","updated_at":"2018-05-04T15:10:43Z","closed_at":null,"author_association":"OWNER","pull_request":{"url":"https://api.github.com/repos/mathjax/mathjax-v3/pulls/103","html_url":"https://github.com/mathjax/mathjax-v3/pull/103","diff_url":"https://github.com/mathjax/mathjax-v3/pull/103.diff","patch_url":"https://github.com/mathjax/mathjax-v3/pull/103.patch"},"body":"This fixes the problem with `\\xrightarrow` not stretching reported by Volker.  This was due to the `<mo>` being asked to stretchy both horizontally (by the `<munderover>`) and vertically (by the enclosing `<mrow>`, since it is an embellished operator in that row).\r\n\r\nThe resolution is to only allow stretching in one direction (since we don't support bi-directional stretching), that being the first direction for which stretching was requested and possible.\r\n\r\nThis also properly scales the maximum width computations in `munderover` so the size of the arrow is correct."},"comment":{"url":"https://api.github.com/repos/mathjax/mathjax-v3/issues/comments/386631873","html_url":"https://github.com/mathjax/mathjax-v3/pull/103#issuecomment-386631873","issue_url":"https://api.github.com/repos/mathjax/mathjax-v3/issues/103","id":386631873,"user":{"login":"zorkow","id":5717215,"avatar_url":"https://avatars2.githubusercontent.com/u/5717215?v=4","gravatar_id":"","url":"https://api.github.com/users/zorkow","html_url":"https://github.com/zorkow","followers_url":"https://api.github.com/users/zorkow/followers","following_url":"https://api.github.com/users/zorkow/following{/other_user}","gists_url":"https://api.github.com/users/zorkow/gists{/gist_id}","starred_url":"https://api.github.com/users/zorkow/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/zorkow/subscriptions","organizations_url":"https://api.github.com/users/zorkow/orgs","repos_url":"https://api.github.com/users/zorkow/repos","events_url":"https://api.github.com/users/zorkow/events{/privacy}","received_events_url":"https://api.github.com/users/zorkow/received_events","type":"User","site_admin":false},"created_at":"2018-05-04T15:10:43Z","updated_at":"2018-05-04T15:10:43Z","author_association":"CONTRIBUTOR","body":"It also does not work in Chrome stable (Version 66.0.3359.117 (Official Build) (64-bit)). I forgot I had one installed. So it's not a dev channel problem. Have you tested in Chrome on Mac?"}}
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