[boost] toolset=clang-win uses clang-linux-win?

Subject: [boost] toolset=clang-win uses clang-linux-win?
From: Peter Dimov (lists_at_[hidden])
Date: 2018-07-09 10:42:21

When I try `b2 toolset=clang-win` on Appveyor, I get `clang-linux-win` 
instead, that is, `-win` is interpreted as version for some reason, not as 
platform:

https://ci.appveyor.com/project/pdimov/system/build/job/sjpdq5yrir2ewuhh

Is this normal, or is it a bug in the clang toolset? Is there a magic 
command line incantation that would let me select clang-win?