\version "2.18.0"
% => http://lilypond-french-users.1298960.n2.nabble.com/Deplacer-une-clef-accidentelle-a-droite-de-la-barre-de-mesure-tt7581442.html

\new PianoStaff <<
  \new Staff {
    \clef G
    s1
    << 
       \relative c''{ 
         \override TrillSpanner.to-barline = ##t
         d1\startTrillSpan 
         d2 dis 
         \bar "||"
         <e, g c e>2 \pp \stopTrillSpan
         \revert TrillSpanner.to-barline
       } \\ 
       \relative c'' { 
         c1_\markup\whiteout\italic "rit. molto" b
         \bar "||"
         s2
       } 
    >>
  }
  \new Staff {
    \clef G
    s1
    << 
       \relative c'{ 
         <f aes>1 
         g2 f
       } \\ 
       \relative c' { 
         g1_~ 
         g 
         \bar "||"
       } 
    >>
    \once\override Score.BreakAlignment.break-align-orders =
       #(make-vector 3 '(staff-bar clef)) 
    \clef F
    << 
      { 
        <c, g,>2
      } \\ 
      { 
        r4 s
      } 
    >>
    
  }
>>