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diff --git a/0.8.0/paludis/args/args_dumper.cc b/0.8.0/paludis/args/args_dumper.cc
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+/* vim: set sw=4 sts=4 et foldmethod=syntax : */
+
+/*
+ * Copyright (c) 2006 Stephen Bennett <spb@gentoo.org>
+ *
+ * This file is part of the Paludis package manager. Paludis 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.
+ *
+ * Paludis 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
+ * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
+ * Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <paludis/args/args_dumper.hh>
+#include <paludis/args/args_option.hh>
+
+#include <sstream>
+
+/** \file
+ * Implementation of ArgsDumper.
+ *
+ * \ingroup grplibpaludisargs
+ */
+
+using namespace paludis;
+using namespace paludis::args;
+
+ArgsDumper::ArgsDumper(std::ostream & os) :
+ _os(os)
+{
+}
+
+void ArgsDumper::visit(const ArgsOption * const a)
+{
+ std::stringstream p;
+ p << " --" << a->long_name();
+ if (a->short_name())
+ p << ", -" << a->short_name();
+ if (p.str().length() < 24)
+ p << std::string(24 - p.str().length(), ' ');
+ else
+ p << std::endl << std::string(24, ' ');
+ _os << p.str();
+ _os << " " << a->description() << std::endl;
+}
+
+#ifndef DOXYGEN
+#define VISIT(type) void ArgsDumper::visit(const type * const a) \
+ { visit(static_cast<const ArgsOption *>(a)); }
+
+VISIT(SwitchArg)
+VISIT(StringArg)
+VISIT(IntegerArg)
+VISIT(AliasArg)
+VISIT(StringSetArg)
+#endif
+
+void ArgsDumper::visit(const EnumArg * const a)
+{
+ visit(static_cast<const ArgsOption *>(a));
+ for (EnumArg::AllowedArgIterator it = a->begin_allowed_args(), it_end = a->end_allowed_args();
+ it != it_end; ++it)
+ {
+ std::stringstream p;
+ p << " " << (*it).first;
+ if (p.str().length() < 26)
+ p << std::string(26 - p.str().length(), ' ');
+ _os << p.str();
+ _os << " " << (*it).second;
+ if ((*it).first == a->default_arg())
+ _os << " (default)";
+ _os << std::endl;
+ }
+}