That's a very convoluted way of achieving something that's already done for you: 

$ perl -E'say STDIN->can("getc")'
$ perl -MIO::Handle -E'say STDIN->can("getc")'
CODE(0x55dddd02b150)

[download]
I.e. if IO::Handle is loaded, STDIN is already an object resembling IO::Handle and you can call getc method on it.

But for the sake of the exercise, you should be able to pass "<:utf8" instead of "r" to fdopen and have getc return Unicode characterscode points again. (untested)

In reply to Re^4: Match full utf-8 characters by Anonymous Monk
in thread Match full utf-8 characters by Allasso

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