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diff --git a/src/global.h b/src/global.h
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+++ b/src/global.h
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+/*
+ *  Copyright 2006-2012 Adrian Thurston <thurston@complang.org>
+ */
+
+/*  This file is part of Colm.
+ *
+ *  Colm 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.
+ * 
+ *  Colm is distributed 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 Colm; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
+ */
+
+#ifndef __COLM_GLOBAL_H
+#define __COLM_GLOBAL_H
+
+#include <stdio.h>
+#include <iostream>
+#include <fstream>
+#include <fstream>
+#include <string>
+
+#include "config.h"
+#include "defs.h"
+#include "avltree.h"
+#include "keyops.h"
+
+#define PROGNAME "colm"
+
+/* IO filenames and stream. */
+extern bool genGraphviz;
+extern int gblErrorCount;
+
+std::ostream &error();
+
+/* IO filenames and stream. */
+extern std::ostream *outStream;
+extern bool generateGraphviz;
+extern bool branchPointInfo;
+extern bool verbose, logging;
+extern bool addUniqueEmptyProductions;
+
+extern int gblErrorCount;
+extern char startDefName[];
+
+/* Error reporting. */
+std::ostream &error();
+std::ostream &error( int first_line, int first_column );
+std::ostream &warning( ); 
+std::ostream &warning( int first_line, int first_column );
+
+extern std::ostream *outStream;
+extern bool printStatistics;
+
+extern int gblErrorCount;
+extern bool gblLibrary;
+extern char machineMain[];
+extern const char *exportHeaderFn;
+
+struct colm_location;
+
+/* Location in an input file. */
+struct InputLoc
+{
+	InputLoc( colm_location *pcloc );
+
+	InputLoc() : fileName(0), line(-1), col(-1)  {}
+
+	InputLoc( const InputLoc &loc )
+	{
+		fileName = loc.fileName;
+		line = loc.line;
+		col = loc.col;
+	}
+
+	const char *fileName;
+	int line;
+	int col;
+};
+
+extern InputLoc internal;
+
+/* Error reporting. */
+std::ostream &error();
+std::ostream &error( const InputLoc &loc ); 
+std::ostream &warning( const InputLoc &loc ); 
+
+void scan( char *fileName, std::istream &input, std::ostream &output );
+void terminateAllParsers( );
+void checkMachines( );
+
+void xmlEscapeHost( std::ostream &out, char *data, int len );
+void openOutput();
+void escapeLiteralString( std::ostream &out, const char *data );
+
+#endif