Unable to parse MySQL type YEAR(4)

[kszucs]

sg.parse_one("YEAR(4)", into=sge.DataType, read="mysql")

fails with

ParseError: Failed to parse 'YEAR(4)' into <class 'sqlglot.expressions.DataType'>

Would it be possible to ignore the display width for all types when parsing?

Another failing case is:
Failed to parse 'mediumint(20)' into <class 'sqlglot.expressions.DataType'>

while bigint(20) is parsed as

In [6]:  sg.parse_one("bigint(20)", into=sge.DataType, read="mysql")
Out[6]:
(DATATYPE this: Type.BIGINT, expressions:
  (DATATYPEPARAM this:
    (LITERAL this: 20, is_string: False)), nested: False, prefix: False)