From: David Kastrup <dak@gnu.org>
Date: Wed, 2 Feb 2011 09:14:11 +0000 (+0100)
Subject: stem-engraver.cc: recreate stem if in need of change when merging different heads
X-Git-Tag: release/2.15.6-1~3^2~7
X-Git-Url: https://git.donarmstrong.com/?a=commitdiff_plain;h=ba6c785e63f926c7ed47d62a482922df65764238;p=lilypond.git

stem-engraver.cc: recreate stem if in need of change when merging different heads
---

diff --git a/lily/stem-engraver.cc b/lily/stem-engraver.cc
index fb54591147..03b404662b 100644
--- a/lily/stem-engraver.cc
+++ b/lily/stem-engraver.cc
@@ -31,7 +31,7 @@
 #include "stem-tremolo.hh"
 #include "stem.hh"
 #include "stream-event.hh"
-
+#include "pointer-group-interface.hh"
 #include "translator.icc"
 
 class Stem_engraver : public Engraver
@@ -156,8 +156,16 @@ Stem_engraver::acknowledge_rhythmic_head (Grob_info gi)
 						 ds < 0 ? 1 << -ds : 1,
 						 ds > 0 ? 1 << ds : 1));
       gi.event_cause ()->origin ()->warning (_ ("maybe input should specify polyphonic voices"));
+      if (ds == 1 && dc > 2) {
+	Grob *old_stem = stem_;
+	stem_=0;	
+	make_stem(gi);
+	extract_grob_set (old_stem, "note-heads", heads);
+	for (int i=heads.size(); i--;)
+	  Stem::add_head(stem_, heads[i]);
+      }
     }
-
+  
   Stem::add_head (stem_, gi.grob ());
 }