typedef unsigned int ucs_char_t; /* assuming 32bit int */
+size_t display_mode_esc_sequence_len(const char *s);
int utf8_width(const char **start, size_t *remainder_p);
int utf8_strnwidth(const char *string, int len, int skip_ansi);
int utf8_strwidth(const char *string);
int is_utf8(const char *text);
int is_encoding_utf8(const char *name);
int same_encoding(const char *, const char *);
+__attribute__((format (printf, 2, 3)))
int utf8_fprintf(FILE *, const char *, ...);
void strbuf_add_wrapped_text(struct strbuf *buf,