[Issue 18254] New: std.range.tee takes the output range by value

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18254

          Issue ID: 18254
           Summary: std.range.tee takes the output range by value
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: normal
          Priority: P1
         Component: phobos
          Assignee: nobody at puremagic.com
          Reporter: jack at jackstouffer.com

Should be auto ref, and a note should be added to the docs saying that passing
by ref should be the default in user code.

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