https://issues.dlang.org/show_bug.cgi?id=20519

          Issue ID: 20519
           Summary: string mixin with arglist evaluates types as stringof
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: minor
          Priority: P1
         Component: dmd
          Assignee: nobody@puremagic.com
          Reporter: default_357-line@yahoo.de

Since https://issues.dlang.org/show_bug.cgi?id=19292 , mixin() behaves like pragma(msg). pragma(msg), for convenience, transforms types into their stringof. This is a terrible behavior for mixin, because the stringof will generally not be visible from the point where you're mixing the string in. This functionality should be disabled for string mixin arguments.

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