Unexpected behavior when using unquoted date as key

[paranoiq]

Version: 3.1.1

it is ok to use keys like 2020-02 without quotes, but 2020-02-02 is a syntax error.

foo:
    2020-02: bar # ok
    2020-02-02: baz # fails

i would expect the behavior to be the same regardless of number of dashes, but maybe the first case working is this some side effect of parsing numbers in sci notation?

anyway, it would be really nice if this works : ]

[paranoiq]

wow! dík! : ]