Fix Unicode character support #91
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Hello! When updating my project to use the latest termbox2 code, I noticed printing characters such as U+250C (and other box drawing characters) stopped working, and instead it printed U+FFFD. This is due to recent changes that makes use of the
iswprint(3)function to check if a Unicode character is printable or not.However, by default, C uses the
LC_CTYPE=Clocale, which is ASCII-only, resulting in the aforementioned behavior. To fix this, I've added a line intb_init()that setsLC_CTYPEtoC.UTF-8, which is the same locale but compatible with UTF-8. This should work fine in most systems.