Bava Batra 146: Gifts to the Bride's Father's House - Temporarily?

A new mishnah! With more on the bridal gifts -- she received gifts after kiddushin, and before nisuin, so they were sent to her father's house, because she hadn't yet been fully married and moved to her husband's house. But then the gifts are not collected in the event that they never reach nisuin. But if the groom eats with the bride's family, the groom gives up his claim on the gifts (even if nisuin doesn't happen). Without that meal with the purported "in-laws," he would still have the claim on them. And not if he said she should be using them still in her parents' house. All of these are things that lose value over time. The Gemara cites cases where issues did creep in between bride and groom. For example, a groom who sent new wine, new oil, and linen in the run-up to Shavuot, in praise of the land of Israel. And another case of a woman who had lost her sense of smell, and who dies before nisuin. Also, coming back to define the bridal gifts and the groomsmen gifts. Plus, another new mishnah - with the case of a person on his deathbed, who gives away all of his property. When does he mean to divest of his possessions even if he gets better, and what must he do to condition the gift on his actual death?