It didn't always work on 9front.  Check the dump!

After bisecting the dump and looking through the git log, I suspect
that 9front changeset 71939a82 [1] will fix it for you.

[1] https://git.9front.org/plan9front/plan9front/71939a82ccc505b0baa990d7fe17e7085d0ab8fc/commit.html


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