in reply to Substituting unicode character leaves special block

This works for me: 
perl -E '(my $mu="μ")=~tr/\x{B5}\x{BC}\x{ce}/uu/d; say unpack "H*
+",$mu;say $mu'
75
u

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Note: the code tags seem to mangle my initialization of $mu to"μ".
I added deletion of 0XCE - perhaps a Unicode-enlightened monk can explain how that stays behind.

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