I have added a Yes/No column, but if the value is
No it doesn't show up in the Book Details Panel
Yes/No columns can have one of three values
Yes,
No and
Undefined.
For my purposes
No and
Undefined are
not the same thing
Would it be possible to display the 'No' value in book details. I you're thinking "but why don't you just look in the list" - the list is often hidden by a dialogue box, the book reader, or any one of several other apps.
My preference would be to have empty columns appear in the Book Details as something like -
Published : <undefined>.
Maybe a Tweak could be implemented to do that. Not on a column by column basis, but something that applied to all columns in Book Details.
I've changed the column to allow the values Yea and Nay

That overcomes my Book Details issue, but now I don't have the nice Green Tick and Red Cross in the book list
BR