Return the column width of a UTF-8 character.
@param s The sequence of bytes containing the character. @param n The maximum number of bytes to inspect. @return The width, in columns, of the UTF-8 character, or -1 if the character is unprintable or cannot be decoded.
See Implementation
Return the column width of a UTF-8 character.
@param s The sequence of bytes containing the character. @param n The maximum number of bytes to inspect. @return The width, in columns, of the UTF-8 character, or -1 if the character is unprintable or cannot be decoded.