Which operators and functions expect their string arguments as octets?

Does somew开发者_开发问答here exist a list with all Perl operators and functions which expect their string arguments as octets?

For example the file test operators need octets ( Question about pathname encoding comment ).

Now I found a code with symlink and I am not sure if I should encode the file names.

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It’s simply because the traditional Unix syscalls that Perl either uses or emulates are all defined in terms of bytes, not characters. If you want a UTF-8 encoded or decoded filename, then you have to do that for yourself. You will not get what you want if you do not.