-Q9N- redirect stdin or stdout safely, including binary data?

From: -IX-  How, in Tcl, can I XXX:

A9N. With Extended Tcl you can safely do stuff like:

        set infp [open "|compress -dc $fileName"]
        set outfp [open "|gzip -c $newFileName" w]

        copyfile $infp $outfp

Thanks to karl@NeoSoft.com (Karl Lehenbauer) for the code example.

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