Yes, I understand what is happening, that's not what I'm asking, sorry if I wasn't clear, let me rephrase it.

What I want is use the return value of POSIX::strftime in gtk2, the bindings use utf8::upgrade on all the strings sent to gtk2 functions.

The question is how do I make sure the string isn't mangled by that, do I :

a) consider the locale is utf8, and use utf8::decode on it to turn on its utf8 flag.

b) use some unknown function that will use the locale to correctly decode the string from whatever encoding the locale is using, and turn it into a valid utf8 string.

c) implement the unknown b) function myself

And also 2 related questions:
- is it a bug ?
- shouldn't this be documented in the man page for POSIX::strftime ?

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