I was looking in Jira and on Ask and didn't see interleave-all mentioned -- we have partition-all and partition, and 1.12 added the vector versions of those. Has there been any discussion of adding interleave-all to go with interleave? I ask because we have a version in our code (well, in our open source lib: https://github.com/worldsingles/commons/blob/master/src/ws/clojure/extensions.clj#L102-L122 ) and I'm trying to retire that library and would love to see it in core.