7876058b

Created Started Cancelled

By: Tom Sydney Kerckhove <syd@cs-syd.eu>

Reach the comment on a nullable field's codec too

optionalFieldOrNullWith puts the field's codec under the EitherCodec that
maybeCodec is, so a comment there was the one kind that still went missing
after the previous commit: the field read as documented in the source and
came out with only its description.

Through that EitherCodec, and only that one, recognised by one of its sides
being the null codec.  A codec made nullable is still that codec.  Any other
EitherCodec is a choice between two things the option is made of, and a
comment on one of them is not about the option.