specifiction of ScalaObject

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Spec says "Furthermore, every user-defined Scala class also inherits the trait scala.ScalaObject." This should be updated to reflect the fact that pure interfaces (traits with only abstract members) are not given a ScalaObject parent. If possible it would be good to provide as well some motivation for this distinction.

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Imported From: https://issues.scala-lang.org/browse/SI-4648?orig=1
Reporter: @paulp

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@paulp said:
Assigning to meeting to ask about the motivation.

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@soc said (edited on Jul 19, 2011 8:35:56 PM UTC):
I wonder why it is still there, though. In earlier releases it was used for this $tag field, but is empty for some releases now.
Is ScalaObject supposed to be a cheap way to discover if an instance/class was written in Scala?

It would be certainly nice imho, if we would have less things at the top of the hierarchy (java.lang.Object, scala.AnyRef, scala.Any, scala.ScalaObject, ...).

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@soc said:
The pull request for spec update is scala/scala-dist#20.

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@retronym said:
Looks like ScalaObject is on the way out, anyway, so the spec could be updated in 2.11 to remove it.

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@gkossakowski said:
Unassigning and rescheduling to M7 as previous deadline was missed.

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@soc said:
Spec updated in scala/scala-dist@f818652.