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diff --git a/src/commands/notation/RespellCommand.cpp b/src/commands/notation/RespellCommand.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 "RespellCommand.h"
+
+#include <klocale.h>
+#include "base/NotationTypes.h"
+#include "base/Selection.h"
+#include "document/BasicSelectionCommand.h"
+#include "base/BaseProperties.h"
+#include <qstring.h>
+
+
+namespace Rosegarden
+{
+using namespace BaseProperties;
+using namespace Accidentals;
+
+QString
+RespellCommand::getGlobalName(Type type, Accidental accidental)
+{
+    switch (type) {
+
+    case Set: {
+            QString s(i18n("Respell with %1"));
+            //!!! should be in notationstrings:
+            if (accidental == DoubleSharp) {
+                s = s.arg(i18n("Do&uble Sharp"));
+            } else if (accidental == Sharp) {
+                s = s.arg(i18n("&Sharp"));
+            } else if (accidental == Flat) {
+                s = s.arg(i18n("&Flat"));
+            } else if (accidental == DoubleFlat) {
+                s = s.arg(i18n("Dou&ble Flat"));
+            } else if (accidental == Natural) {
+                s = s.arg(i18n("&Natural"));
+            } else {
+                s = s.arg(i18n("N&one"));
+            }
+            return s;
+        }
+
+    case Up:
+        return i18n("Respell Accidentals &Upward");
+
+    case Down:
+        return i18n("Respell Accidentals &Downward");
+
+    case Restore:
+        return i18n("&Restore Accidentals");
+    }
+
+    return i18n("Respell Accidentals");
+}
+
+void
+RespellCommand::modifySegment()
+{
+    EventSelection::eventcontainer::iterator i;
+
+    for (i = m_selection->getSegmentEvents().begin();
+            i != m_selection->getSegmentEvents().end(); ++i) {
+
+        if ((*i)->isa(Note::EventType)) {
+
+            if (m_type == Up || m_type == Down) {
+
+                Accidental acc = NoAccidental;
+                (*i)->get
+                <String>(ACCIDENTAL, acc);
+
+                if (m_type == Down) {
+                    if (acc == DoubleFlat) {
+                        acc = Flat;
+                    } else if (acc == Flat || acc == NoAccidental) {
+                        acc = Sharp;
+                    } else if (acc == Sharp) {
+                        acc = DoubleSharp;
+                    }
+                } else {
+                    if (acc == Flat) {
+                        acc = DoubleFlat;
+                    } else if (acc == Sharp || acc == NoAccidental) {
+                        acc = Flat;
+                    } else if (acc == DoubleSharp) {
+                        acc = Sharp;
+                    }
+                }
+
+                (*i)->set
+                <String>(ACCIDENTAL, acc);
+
+            } else if (m_type == Set) {
+
+                // trap respelling black key notes as natural; which is
+                // impossible, and makes rawPitchToDisplayPitch() do crazy
+                // things as a consequence (fixes #1349782)
+                // 1 = C#, 3 = D#, 6 = F#, 8 = G#, 10 = A#
+                long pitch;
+                (*i)->get
+                <Int>(PITCH, pitch);
+                pitch %= 12;
+                if ((pitch == 1 || pitch == 3 || pitch == 6 || pitch == 8 || pitch == 10 )
+                        && m_accidental == Natural) {
+                    // fail silently; is there anything to do here?
+                } else {
+                    (*i)->set
+                    <String>(ACCIDENTAL, m_accidental);
+                }
+
+            } else {
+
+                (*i)->unset(ACCIDENTAL);
+            }
+        }
+    }
+}
+
+}