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diff --git a/indra/newview/llsyntaxid.h b/indra/newview/llsyntaxid.h
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+/** 
+ * @file llsyntaxid.h
+ * @brief Contains methods to access the LSLSyntaxId feature and LSLSyntax capability
+ * to use the appropriate syntax file for the current region's LSL version.
+ * @author Ima Mechanique, Cinder Roxley
+ *
+ * $LicenseInfo:firstyear=2013&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2013, Linden Research, Inc.
+ * 
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ * 
+ * This library 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
+ * Lesser General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ * 
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
+ * $/LicenseInfo$
+ */
+#ifndef LL_SYNTAXID_H
+#define LL_SYNTAXID_H
+
+#include "llviewerprecompiledheaders.h"
+
+#include "llsingleton.h"
+
+class fetchKeywordsFileResponder;
+
+class LLSyntaxIdLSL : public LLSingleton<LLSyntaxIdLSL>
+{
+	friend class LLSingleton<LLSyntaxIdLSL>;
+	friend class fetchKeywordsFileResponder;
+	
+private:
+	std::list<std::string> mInflightFetches;
+	typedef boost::signals2::signal<void()> syntax_id_changed_signal_t;
+	syntax_id_changed_signal_t mSyntaxIDChangedSignal;
+	boost::signals2::connection mRegionChangedCallback;
+	
+	bool	syntaxIdChanged();
+	bool	isSupportedVersion(const LLSD& content);
+	void	handleRegionChanged();
+	void	handleCapsReceived(const LLUUID& region_uuid);
+	void	handleFileFetched(const std::string& filepath);
+	void	setKeywordsXml(const LLSD& content) { mKeywordsXml = content; };
+	void	buildFullFileSpec();
+	void	fetchKeywordsFile(const std::string& filespec);
+	void	loadDefaultKeywordsIntoLLSD();
+	void	loadKeywordsIntoLLSD();
+	
+	std::string		mCapabilityURL;
+	std::string		mFullFileSpec;
+	ELLPath			mFilePath;
+	LLUUID			mSyntaxId;
+	LLSD			mKeywordsXml;
+	
+public:
+	LLSyntaxIdLSL();
+	void initialize();
+	bool keywordFetchInProgress();
+	LLSD getKeywordsXML() const { return mKeywordsXml; };
+	boost::signals2::connection addSyntaxIDCallback(const syntax_id_changed_signal_t::slot_type& cb);
+};
+
+#endif // LLSYNTAXID_H