What output does that Perl command-line script produce?
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C:\>perl -MScalar::Util=looks_like_number -wE "use utf8; say looks_lik
+e_number('ç')? 'yes' : 'no'"
$ perl -MScalar::Util=looks_like_number -wE 'use utf8; say looks_like_
+number("ç") ? "yes" : "no"'
Malformed UTF-8 character (1 byte, need 3, after start byte 0xe7) at -
+e line 1.
By posting a command-line script and then not posting the output it produces, you've made no useful point—at least not one that's immediately understandable.
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