There are two specific situations I'm interested in.
note with accidental tied into next bar (G♯ say, in key C) and in the next bar the ♯ is repeated on the note at the end of the tie. Is a following G in the second bar a G♯?
note with accidental tied into next bar as above but a cautionary ♯ is applied in brackets on the tied note in second bar, Is the following G now G ♮ as it would be without the cautionary accidental?
Variant of (1) but tie is split over lines.
Edit to show precise example - what do the rules of notation define the last note of the triplet as?

It is answered already here: https://music.stackexchange.com/questions/33533/what-conventions-are-used-with-accidentals-and-tied-notes?rq=1
– Albrecht Hügli Jun 20 '19 at 14:09