That aliasing command relies on typeglobs to work.
Therefore it will only work with global variables. (ie
you must localize with local, not my.) I stay away
from that except when it really doesn't make sense not
The mostly widely used form of that kind of aliasing in
modern Perl is for exporting symbols using Exporter.
FWIW one goal for Perl 6 is to kill typeglobs entirely.
The functionality should be available, but by a different
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