🚀 go-pugleaf

The type of the selection matters; keepWithNext is only part of Paragraphs, and your selection may be something else. I tested the type of mySelection using

      alert ("Selection is of type "+mySelection.constructor.name);




and it gave back "InsertionPoint", "Text", "Word" -- ah, finally! If you triple-click a paragraph, only then it returns "Paragraph".

So, check if the type is "Paragraph"; if so, use that, else check the selection's .parent property? Doesn't work. Any parent of text items seem to be "Story".

But there is another interesting property all these text types have in common: they all have "paragraphs" (an array). A quick check using

      mySelection.paragraphs[0].fillTint = 25;




shows that, indeed, you can use this for direct access to 'the selected paragraph'.