July 24
https://issues.dlang.org/show_bug.cgi?id=24679

          Issue ID: 24679
           Summary: [ref variables] Allow `auto ref`
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: qs.il.paperinik@gmail.com

In particular for meta-programming, but also generally useful: Allow `auto ref` variables that are `ref` if and only if their initializer is an lvalue.

--