Function utf8_width

utf8.c:198–204

* This function returns the number of columns occupied by the character * pointed to by the variable start. The pointer is updated to point at * the next character. When remainder_p is not NULL, it points at the * location that stores the number of remaining bytes we can use to pick * a character (see pick_one_utf8_char() above). */

 * a character (see pick_one_utf8_char() above).
 */
int utf8_width(const char **start, size_t *remainder_p)
{
	ucs_char_t ch = pick_one_utf8_char(start, remainder_p);
	if (!*start)
		return 0;
	return git_wcwidth(ch);
}

/*
 * Returns the total number of columns required by a null-terminated