https://issues.dlang.org/show_bug.cgi?id=21909

Paul Backus <snarwin+bugzilla@gmail.com> changed:

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
                 CC|                            |snarwin+bugzilla@gmail.com
         Resolution|---                         |INVALID

--- Comment #1 from Paul Backus <snarwin+bugzilla@gmail.com> ---
As far as I can tell (https://run.dlang.io/is/4tusPN), `scope` is in fact inferred for `arg` in the example given. So this is not an issue with templates genrally, but with `format`, `write`, and `writeln` in particular.

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