Jira (PUP-11505) Unexpected results using stdlib's to_yaml with data containing repeated variables

[Josh Cooper (Jira)]

Title: Message Title

Josh Cooper commented on PUP-11505   Re: Unexpected results using stdlib's to_yaml with data containing repeated variables Technically, puppet is behaving correctly. The same array object is referenced in multiple times and to_yaml produced valid YAML, preserving the fact that the same array object was emitted 3 times. Some yaml bindings allow the behavior to be altered, such PyYAML's ignore_aliases https://github.com/yaml/pyyaml/blob/8cdff2c80573b8be8e8ad28929264a913a63aa33/lib/yaml/representer.py#L131 This post goes into more detail: https://ttl255.com/yaml-anchors-and-aliases-and-how-to-disable-them/ The other option is to deep clone the object, which flatten is effectively doing, but only the caller really knows if the object can be deep cloned. Add Comment   This message was sent by Atlassian Jira (v8.20.2#820002-sha1:829506d) -- You received this message because you are subscribed to the Google Groups "Puppet Bugs" group. To unsubscribe from this group and stop receiving emails from it, send an email to puppet-bugs+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/puppet-bugs/JIRA.443443.1649780627000.10897.1649797860147%40Atlassian.JIRA.