Repeated accidentals after ties

[Justus Schümmer]

Hi. Here are two small issues:

1. When I repeat a chord with q which contains a reminder accidental,
both notes get the accidental:
\version "2.18.2"
\relative c'' {
        <c bes!>2~ q
}
I think (maybe I am wrong) even the reminder should be printed only once.

2. This is a special case so the example explains it better than I can.
\version "2.18.2"
\relative c'' {
        \key g \major
        f1~ \break
        | f2 f2
}
The natural here appears two times in the second bar.