X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fbook.cc;h=e8d0252b2158da5347a26fbf09011f1970c02b67;hb=98917430c66cf99c9ac706003056396b890319ff;hp=28bdb6d5e84a8af8c43033fafb0986127963eff3;hpb=c8442db53e786c61c1b1cf82448e069a645e60ba;p=lilypond.git

diff --git a/lily/book.cc b/lily/book.cc
index 28bdb6d5e8..e8d0252b21 100644
--- a/lily/book.cc
+++ b/lily/book.cc
@@ -38,6 +38,12 @@ Book::Book ()
   smobify_self ();
 }
 
+Book* 
+Book::clone () const
+{
+  return new Book (*this);
+}
+
 Book::~Book ()
 {
 }
@@ -136,3 +142,4 @@ Book::process (Output_def *default_paper,
   scm_remember_upto_here_1 (scm_key);
   return paper_book;
 }
+