https://issues.dlang.org/show_bug.cgi?id=18657
--- Comment #7 from Dlang Bot <dlang-bot@dlang.rocks> --- @wilzbach created dlang/phobos pull request #6951 "Merge remote-tracking branch 'upstream/stable' into merge_stable" mentioning this issue: - make `chain` compatible with `RefRange` Part of a series on issue 18657. - make `group` compatible with `RefRange` Part of a series on issue 18657. - make `choose` compatible with `RefRange` Part of a series on issue 18657. - make `cycle` compatible with `RefRange` Part of a series on issue 18657. - make `splitter` compatible with `RefRange` Part of a series on issue 18657. - make `roundRobin` compatible with `RefRange` Part of a series on issue 18657. - make `until` compatible with `RefRange` Part of a series on issue 18657. https://github.com/dlang/phobos/pull/6951 --