If you need to work around a bug, just use 

utf8::upgrade($var);

[download]

or 

utf8::downgrade($var);

[download]

to get the the string in the expected storage format (regardless of the current storage format).

The only use I can think of for utf8::is_utf8 is for debugging, but I use Devel::Peek's Dump when I want to peek at a scalar's internals.

In reply to Re: utf8::is_utf8 valid introspection? by ikegami
in thread utf8::is_utf8 valid introspection? by McA

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