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diff --git a/src/commands/notation/TupletCommand.cpp b/src/commands/notation/TupletCommand.cpp
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+++ b/src/commands/notation/TupletCommand.cpp
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+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rosegarden
+    A MIDI and audio sequencer and musical notation editor.
+ 
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <glaurent@telegraph-road.org>,
+        Chris Cannam        <cannam@all-day-breakfast.com>,
+        Richard Bown        <richard.bown@ferventsoftware.com>
+ 
+    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
+    Bown to claim authorship of this work have been asserted.
+ 
+    Other copyrights also apply to some parts of this work.  Please
+    see the AUTHORS file and individual file headers for details.
+ 
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+
+#include "TupletCommand.h"
+
+#include "base/Event.h"
+#include "base/Segment.h"
+#include "base/SegmentNotationHelper.h"
+#include "document/BasicCommand.h"
+#include "base/BaseProperties.h"
+#include <qstring.h>
+
+
+namespace Rosegarden
+{
+
+using namespace BaseProperties;
+
+TupletCommand::TupletCommand(Segment &segment,
+                             timeT startTime,
+                             timeT unit,
+                             int untupled, int tupled,
+                             bool hasTimingAlready) :
+        BasicCommand(getGlobalName((untupled == 3) && (tupled == 2)),
+                     segment, startTime, startTime + (unit * untupled)),
+        m_unit(unit),
+        m_untupled(untupled),
+        m_tupled(tupled),
+        m_hasTimingAlready(hasTimingAlready)
+{
+    // nothing else
+}
+
+void
+TupletCommand::modifySegment()
+{
+    if (m_hasTimingAlready) {
+
+        int groupId = getSegment().getNextId();
+
+        for (Segment::iterator i = getSegment().findTime(getStartTime());
+                getSegment().isBeforeEndMarker(i); ++i) {
+
+            if ((*i)->getNotationAbsoluteTime() >=
+                    getStartTime() + (m_unit * m_tupled))
+                break;
+
+            Event *e = *i;
+
+            e->set
+            <Int>(BEAMED_GROUP_ID, groupId);
+            e->set
+            <String>(BEAMED_GROUP_TYPE, GROUP_TYPE_TUPLED);
+
+            e->set
+            <Int>(BEAMED_GROUP_TUPLET_BASE, m_unit);
+            e->set
+            <Int>(BEAMED_GROUP_TUPLED_COUNT, m_tupled);
+            e->set
+            <Int>(BEAMED_GROUP_UNTUPLED_COUNT, m_untupled);
+        }
+
+    } else {
+        SegmentNotationHelper helper(getSegment());
+        helper.makeTupletGroup(getStartTime(), m_untupled, m_tupled, m_unit);
+    }
+}
+
+}