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diff --git a/qt/qextscintillalexerdiff.cpp b/qt/qextscintillalexerdiff.cpp
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+// This module implements the QextScintillaLexerDiff class.
+//
+// Copyright (c) 2006
+// 	Riverbank Computing Limited <info@riverbankcomputing.co.uk>
+// 
+// This file is part of QScintilla.
+// 
+// This copy of QScintilla 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, or (at your option) any
+// later version.
+// 
+// QScintilla is supplied in the hope that it will be useful, but WITHOUT ANY
+// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+// FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+// details.
+// 
+// You should have received a copy of the GNU General Public License along with
+// QScintilla; see the file LICENSE.  If not, write to the Free Software
+// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+
+#include <qcolor.h>
+#include <qfont.h>
+#include <qsettings.h>
+
+#include "qextscintillalexerdiff.h"
+
+
+// The ctor.
+QextScintillaLexerDiff::QextScintillaLexerDiff(QObject *parent,const char *name)
+	: QextScintillaLexer(parent,name)
+{
+}
+
+
+// The dtor.
+QextScintillaLexerDiff::~QextScintillaLexerDiff()
+{
+}
+
+
+// Returns the language name.
+const char *QextScintillaLexerDiff::language() const
+{
+	return "Diff";
+}
+
+
+// Returns the lexer name.
+const char *QextScintillaLexerDiff::lexer() const
+{
+	return "diff";
+}
+
+
+// Return the string of characters that comprise a word.
+const char *QextScintillaLexerDiff::wordCharacters() const
+{
+	return "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-";
+}
+
+
+// Returns the foreground colour of the text for a style.
+QColor QextScintillaLexerDiff::color(int style) const
+{
+	switch (style)
+	{
+	case Default:
+		return QColor(0x00,0x00,0x00);
+
+	case Comment:
+		return QColor(0x00,0x7f,0x00);
+
+	case Command:
+		return QColor(0x7f,0x7f,0x00);
+
+	case Header:
+		return QColor(0x7f,0x00,0x00);
+
+	case Position:
+		return QColor(0x7f,0x00,0x7f);
+
+	case LineRemoved:
+		return QColor(0x00,0x7f,0x7f);
+
+	case LineAdded:
+		return QColor(0x00,0x00,0x7f);
+	}
+
+	return QextScintillaLexer::color(style);
+}
+
+
+// Returns the user name of a style.
+QString QextScintillaLexerDiff::description(int style) const
+{
+	switch (style)
+	{
+	case Default:
+		return tr("Default");
+
+	case Comment:
+		return tr("Comment");
+
+	case Command:
+		return tr("Command");
+
+	case Header:
+		return tr("Header");
+
+	case Position:
+		return tr("Position");
+
+	case LineRemoved:
+		return tr("Removed line");
+
+	case LineAdded:
+		return tr("Added line");
+	}
+
+	return QString::null;
+}