typedef unsigned int ucs_char_t; /* assuming 32bit int */
-ucs_char_t pick_one_utf8_char(const char **start);
-int utf8_width(const char **start);
+ucs_char_t pick_one_utf8_char(const char **start, size_t *remainder_p);
+int utf8_width(const char **start, size_t *remainder_p);
+int utf8_strwidth(const char *string);
int is_utf8(const char *text);
int is_encoding_utf8(const char *name);