Cosimo Lupo 99ea0a3986 [unicodedata] add script_code func and 'default' fallback arg
`script_code` does the reverse of `script_name`: it takes a long
script name and returns a 4-letter script code.

Both `script_name` and `script_code` raise KeyError by default,
but can optionally return a default value instead.
2017-11-22 17:46:44 +01:00
..