* input/regression/beam-quanting-horizontal.ly: update texidoc

[lilypond.git] / lily / music.cc

diff --git a/lily/music.cc b/lily/music.cc
index 9c51464c1570b8402b5b37f290a3c8dab1005e05..1866be33f4bfcfb054936bdd9d08b3afa4d4a34c 100644 (file)
--- a/lily/music.cc
+++ b/lily/music.cc
@@ -14,8 +14,10 @@
 #include "pitch.hh"
 #include "ly-smobs.icc"
 
-SCM
-ly_deep_mus_copy (SCM m)
+
+LY_DEFINE(ly_deep_mus_copy,
+         "ly:music-deep-copy", 1,0,0, (SCM m),
+         "Copy @var{m} and all sub expressions of @var{m}")
 {
   if (unsmob_music (m))
     {
@@ -63,7 +65,6 @@ Music::compress (Moment)
 {
 }
 
-
 Music::Music (Music const &m)
 {
   immutable_property_alist_ = m.immutable_property_alist_;
@@ -152,10 +153,19 @@ Music::print_smob (SCM s, SCM p, scm_print_state*)
 {
   scm_puts ("#<Music ", p);
   Music* m = unsmob_music (s);
-  scm_puts (classname (m),p);
 
+  SCM nm = m->get_mus_property ("name");
+  if (gh_symbol_p (nm) || gh_string_p (nm))
+    {
+      scm_display (nm, p);
+    }
+  else
+    {
+      scm_puts (classname (m),p);
+    }
+  
   /*
-    Printing these takes a lot of time, especially during backtraces.
+    Printing properties takes a lot of time, especially during backtraces.
     For inspecting, it is better to explicitly use an inspection
     function.
    */
@@ -233,7 +243,9 @@ LY_DEFINE(ly_get_music_length,
 
 LY_DEFINE(ly_get_mus_property,
          "ly:get-mus-property", 2, 0, 0,  (SCM mus, SCM sym),
-         "Get the property @var{sym} of music expression @var{mus}.")
+         "Get the property @var{sym} of music expression @var{mus}.\n"
+         "If @var{sym} is undefined, return @code{'()}.\n"
+         )
 {
   Music * sc = unsmob_music (mus);
   SCM_ASSERT_TYPE(sc, mus, SCM_ARG1, __FUNCTION__, "music");