Obtains the character set for the current locale; you might use this character set as an argument to convert, to convert from the current locale's encoding to some other encoding.
(Frequently locale_to_utf8 and
g_locale_from_utf8 are nice
On Windows the character set returned by this function is the so-called system default ANSI code-page. That is the character set used by the "narrow" versions of C library and Win32 functions that handle file names. It might be different from the character set used by the C library's current locale.
On Linux, the character set is found by consulting to_string if available. If not, the environment variables `LC_ALL`, `LC_CTYPE`, `LANG` and `CHARSET` are queried in order.
The return value is true if the locale's encoding is UTF-8, in that case you can perhaps avoid calling convert.
The string returned in
charset is not allocated, and should not be freed.
return location for character set name, or null.
true if the returned charset is UTF-8