minor tweaks
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@@ -340,12 +340,12 @@ void clear(){
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trackersClear();
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}
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void trackerAttach( UndoTracker& tracker ){
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ASSERT_MESSAGE( m_trackers.find( &tracker ) == m_trackers.end(), "undo tracker already attached" );
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m_trackers.insert( &tracker );
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const bool inserted = m_trackers.insert( &tracker ).second;
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ASSERT_MESSAGE( inserted, "undo tracker already attached" );
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}
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void trackerDetach( UndoTracker& tracker ){
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ASSERT_MESSAGE( m_trackers.find( &tracker ) != m_trackers.end(), "undo tracker cannot be detached" );
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m_trackers.erase( &tracker );
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const bool erased = m_trackers.erase( &tracker );
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ASSERT_MESSAGE( erased, "undo tracker cannot be detached" );
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}
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void trackersClear() const {
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for ( Trackers::const_iterator i = m_trackers.begin(); i != m_trackers.end(); ++i )
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