+size_t recode_string_len (const char *to, const char *from,
+ const char *text, int len);
+
+char *utf8_encoding_trunc (const char *, const char *encoding,
+ size_t max_len);
+size_t utf8_encoding_trunc_len (const char *, const char *encoding,
+ size_t max_len);
+
+char *utf8_encoding_concat (const char *head, const char *tail,
+ const char *encoding, size_t max_len);
+size_t utf8_encoding_concat_len (const char *head, const char *tail,
+ const char *encoding, size_t max_len);
+
+char *utf8_to_filename (const char *filename);
+char *filename_to_utf8 (const char *filename);
+