1\version "2.16.0"
2
3\header {
4  texidoc="
5A second book-level header block and headers nested in bookpart and score should not clear values from the first header block.  This score should show composer, piece, subtitle and title."
6}
7
8\book {
9  \header {
10    title = "Title incorrect (to be superseded at book level)"
11    subtitle = "Subtitle incorrect (to be superseded in bookpart)"
12    composer = "Composer correct (set in book)"
13    piece = "Piece incorrect (to be superseded in score)"
14  }
15  % This should replace title without affecting other fields
16  \header {
17    title = "Title correct (superseded at book level)"
18  }
19  \bookpart {
20    % This should replace subtitle without affecting other fields
21    \header {
22      subtitle = "Subtitle correct (superseded in bookpart)"
23    }
24    \markup \vspace #2
25    \markup { \bold Note: title, subtitle, piece, and composer expected. }
26    \markup \vspace #2
27    \score {
28      \new Staff { c'1 }
29      \header {
30        % This should replace piece without affecting other fields
31        piece = "Piece correct (superseded in score)"
32      }
33    }
34  }
35}
36