--- a/C++/Parser.cpp	Sun Feb 16 12:38:49 2014 +0100
+++ b/C++/Parser.cpp	Sun Feb 16 12:39:03 2014 +0100
@@ -1,7 +1,7 @@
 /*
  * Parser.h -- config file parser
  *
- * Copyright (c) 2011, 2012, 2013 David Demelier <markand@malikania.fr>
+ * Copyright (c) 2013, 2014 David Demelier <markand@malikania.fr>
  *
  * Permission to use, copy, modify, and/or distribute this software for any
  * purpose with or without fee is hereby granted, provided that the above
@@ -69,6 +69,11 @@
 	return m_options.end();
 }
 
+bool operator==(const Section &s1, const Section &s2)
+{
+	return s1.m_name == s2.m_name && s1.m_options == s2.m_options;
+}
+
 /* --------------------------------------------------------
  * Parser private members
  * -------------------------------------------------------- */
@@ -210,7 +215,7 @@
 
 	file.open(m_path.c_str());
 	if (!file.is_open())
-		throw std::runtime_error(m_path + std::string(std::strerror(errno)));
+		throw std::runtime_error(m_path + ": " + std::string(std::strerror(errno)));
 
 	while (std::getline(file, line))
 		readLine(lineno++, line);
@@ -288,3 +293,11 @@
 {
 	std::cout << "line " << number << ": " << message << std::endl;
 }
+
+bool operator==(const Parser &p1, const Parser &p2)
+{
+	return p1.m_sections == p2.m_sections &&
+	    p1.m_path == p2.m_path &&
+	    p1.m_tuning == p2.m_tuning &&
+	    p1.m_commentChar == p2.m_commentChar;
+}