{"action":"created","issue":{"url":"https://api.github.com/repos/harfbuzz/harfbuzz/issues/740","repository_url":"https://api.github.com/repos/harfbuzz/harfbuzz","labels_url":"https://api.github.com/repos/harfbuzz/harfbuzz/issues/740/labels{/name}","comments_url":"https://api.github.com/repos/harfbuzz/harfbuzz/issues/740/comments","events_url":"https://api.github.com/repos/harfbuzz/harfbuzz/issues/740/events","html_url":"https://github.com/harfbuzz/harfbuzz/issues/740","id":293402308,"number":740,"title":"Allow mark placement on latter glyph in a reordered multiple substitution","user":{"login":"punchcutter","id":11257204,"avatar_url":"https://avatars1.githubusercontent.com/u/11257204?v=4","gravatar_id":"","url":"https://api.github.com/users/punchcutter","html_url":"https://github.com/punchcutter","followers_url":"https://api.github.com/users/punchcutter/followers","following_url":"https://api.github.com/users/punchcutter/following{/other_user}","gists_url":"https://api.github.com/users/punchcutter/gists{/gist_id}","starred_url":"https://api.github.com/users/punchcutter/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/punchcutter/subscriptions","organizations_url":"https://api.github.com/users/punchcutter/orgs","repos_url":"https://api.github.com/users/punchcutter/repos","events_url":"https://api.github.com/users/punchcutter/events{/privacy}","received_events_url":"https://api.github.com/users/punchcutter/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2018-02-01T04:45:42Z","updated_at":"2018-02-11T03:51:11Z","closed_at":null,"author_association":"NONE","body":"Related issues:\r\nhttps://github.com/harfbuzz/harfbuzz/issues/558\r\nhttps://github.com/harfbuzz/harfbuzz/issues/364\r\nhttps://github.com/OpenType/opentype-layout/blob/master/docs/ligatures.md\r\n\r\nWe have run into an issue with USE shaping of Newa script. The vowel signs AI, O, and AU get contexually decomposed into two parts: pre-base and post-base. Because this is a multiple substitution the current behavior is to attach any following marks to the first glyph of the multiple sub, but since we have a pre-base reordering triggered by the pref feature this makes no sense. Any marks should try attaching to the post-base half of the substitution instead. "},"comment":{"url":"https://api.github.com/repos/harfbuzz/harfbuzz/issues/comments/364718188","html_url":"https://github.com/harfbuzz/harfbuzz/issues/740#issuecomment-364718188","issue_url":"https://api.github.com/repos/harfbuzz/harfbuzz/issues/740","id":364718188,"user":{"login":"behdad","id":142891,"avatar_url":"https://avatars3.githubusercontent.com/u/142891?v=4","gravatar_id":"","url":"https://api.github.com/users/behdad","html_url":"https://github.com/behdad","followers_url":"https://api.github.com/users/behdad/followers","following_url":"https://api.github.com/users/behdad/following{/other_user}","gists_url":"https://api.github.com/users/behdad/gists{/gist_id}","starred_url":"https://api.github.com/users/behdad/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/behdad/subscriptions","organizations_url":"https://api.github.com/users/behdad/orgs","repos_url":"https://api.github.com/users/behdad/repos","events_url":"https://api.github.com/users/behdad/events{/privacy}","received_events_url":"https://api.github.com/users/behdad/received_events","type":"User","site_admin":false},"created_at":"2018-02-11T03:51:11Z","updated_at":"2018-02-11T03:51:11Z","author_association":"COLLABORATOR","body":"I gave it a try.  Please test."}}
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