+
+#define M_ICONV_HOOK_FROM 1
+#define M_ICONV_HOOK_TO 2
+
+extern char *Charset;
+extern int Charset_is_utf8;
+
+void charset_initialize(void);
+void mutt_canonical_charset(char *, ssize_t, const char *);
+
+int charset_is_utf8(const char *s);
+int charset_is_us_ascii(const char *s);