You need to use the file descriptor, not the file itself:
Right, that's it. :-) I'm used to duping regular typeglob-style filehandles, in which case you can just use the name. But you're right that you need the fd for anonymous symbol-table entries (a la FileHandle).
The typeglob assign just needs another star:
Cool. I knew there was a way to do that but couldn't think what it needed. Good catch.
bbfu
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