{"action":"opened","issue":{"url":"https://api.github.com/repos/gap-system/gap/issues/1468","repository_url":"https://api.github.com/repos/gap-system/gap","labels_url":"https://api.github.com/repos/gap-system/gap/issues/1468/labels{/name}","comments_url":"https://api.github.com/repos/gap-system/gap/issues/1468/comments","events_url":"https://api.github.com/repos/gap-system/gap/issues/1468/events","html_url":"https://github.com/gap-system/gap/issues/1468","id":240035244,"number":1468,"title":"Get rid of MASTER_POINTER_NUMBER in `CopyStabChain`","user":{"login":"fingolfin","id":241512,"avatar_url":"https://avatars1.githubusercontent.com/u/241512?v=3","gravatar_id":"","url":"https://api.github.com/users/fingolfin","html_url":"https://github.com/fingolfin","followers_url":"https://api.github.com/users/fingolfin/followers","following_url":"https://api.github.com/users/fingolfin/following{/other_user}","gists_url":"https://api.github.com/users/fingolfin/gists{/gist_id}","starred_url":"https://api.github.com/users/fingolfin/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/fingolfin/subscriptions","organizations_url":"https://api.github.com/users/fingolfin/orgs","repos_url":"https://api.github.com/users/fingolfin/repos","events_url":"https://api.github.com/users/fingolfin/events{/privacy}","received_events_url":"https://api.github.com/users/fingolfin/received_events","type":"User","site_admin":false},"labels":[{"id":180442296,"url":"https://api.github.com/repos/gap-system/gap/labels/enhancement","name":"enhancement","color":"84b6eb","default":true}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-07-02T21:21:07Z","updated_at":"2017-07-02T21:21:07Z","closed_at":null,"body":"We really should get rid of the `MASTER_POINTER_NUMBER` call in `CopyStabChain`.\r\n\r\nOne way to do so might be to add a variant of `StructuralCopy` which returns a fully mutable result (even if parts of the input were immutable) ? I haven't really looked into this myself, so this might be totally off. Hopefully @ChrisJefferson can elaborate a bit."}}
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