Perl "-C" flag question

Why doesn't the "-C" flag have an option to enable the "use ut开发者_如何学Gof8"-pragma?

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I guess it is because they control different aspects of encoding:

• The -C flag controls the default encoding of input and output streams read or written by the program.
• The use utf8 pragma tells the Perl parser if the source code is UTF-8. This can also be detected by a BOM in the source file.