I was talking with a friend about an event tomorrow, and I wanted to tell him I'd text him tomorrow after the event and let him know what happened. I said, "I'll text you tomorrow what happens."
I said this entirely unmonitored in casual conversation, but it sounded clunky when I heard it out loud. The natural alternative would be "I'll text you what happens tomorrow." This variation brings the "what" phrase immediately after the object, which sounds a little better, but it also introduces ambiguity, especially since it refers to the same time period as the event. I could resolve the ambiguity by saying, "Tomorrow, I'll text you what happens," but that sounds far worse than my original statement.
Is there a best practice (for lack of better term) for dealing with this? Also, would someone be willing to explain what's going on grammatically and linguistically? I'm new to serious grammatical and linguistic studies, but it seems like "what happens" is the retained object, and "tomorrow" is a preposition. Is there a prescriptive and/or descriptive linguistic reason for why these different cases to sound better or worse?