diff -rc2P libbash-original//Makefile.am libbash-modified//Makefile.am
*** libbash-original//Makefile.am	Thu Apr 12 15:48:50 2012
--- libbash-modified//Makefile.am	Thu Apr 12 17:48:17 2012
***************
*** 237,240 ****
--- 237,242 ----
  					 src/builtins/unset_builtin.h \
  					 src/builtins/unset_builtin.cpp \
+ 					 src/builtins/set_builtin.h \
+ 					 src/builtins/set_builtin.cpp \
  					 src/builtins/builtin_exceptions.h \
  					 $(GENERATED_PARSER_C) \
diff -rc2P libbash-original//src/builtins/set_builtin.cpp libbash-modified//src/builtins/set_builtin.cpp
*** libbash-original//src/builtins/set_builtin.cpp	Thu Jan  1 03:00:00 1970
--- libbash-modified//src/builtins/set_builtin.cpp	Thu Apr 12 19:18:20 2012
***************
*** 0 ****
--- 1,40 ----
+ /*
+    Please use git log for copyright holder and year information
+ 
+    This file is part of libbash.
+ 
+    libbash 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.
+ 
+    libbash 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 libbash.  If not, see <http://www.gnu.org/licenses/>.
+ */
+ ///
+ /// \file set_builtin.cpp
+ /// \brief implementation for the set builtin
+ ///
+ #include "builtins/set_builtin.h"
+ #include "core/interpreter.h"
+ 
+ #include <boost/lexical_cast.hpp>
+ 
+ int set_builtin::exec(const std::vector<std::string>& bash_args)
+ {
+   if(bash_args.empty())
+     return 0;
+ 
+   if(bash_args[0] == "--") {
+     int i = 1;
+     for (auto iter = bash_args.begin() + 1; iter != bash_args.end(); ++iter, ++i)
+       _walker.define(boost::lexical_cast<std::string>(i), *iter);
+   }
+   
+   return 0;
+ }
diff -rc2P libbash-original//src/builtins/set_builtin.h libbash-modified//src/builtins/set_builtin.h
*** libbash-original//src/builtins/set_builtin.h	Thu Jan  1 03:00:00 1970
--- libbash-modified//src/builtins/set_builtin.h	Thu Apr 12 17:48:17 2012
***************
*** 0 ****
--- 1,39 ----
+ /*
+    Please use git log for copyright holder and year information
+ 
+    This file is part of libbash.
+ 
+    libbash 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.
+ 
+    libbash 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 libbash.  If not, see <http://www.gnu.org/licenses/>.
+ */
+ ///
+ /// \file unset_builtin.h
+ /// \brief implementation for the unset builtin
+ ///
+ #ifndef LIBBASH_BUILTINS_UNSET_BUILTIN_H_
+ #define LIBBASH_BUILTINS_UNSET_BUILTIN_H_
+ 
+ #include "cppbash_builtin.h"
+ 
+ ///
+ /// \class unset_builtin
+ /// \brief the unset builtin for bash
+ ///
+ class unset_builtin : public virtual cppbash_builtin
+ {
+ public:
+   BUILTIN_CONSTRUCTOR(set)
+   virtual int exec(const std::vector<std::string>& bash_args);
+ };
+ 
+ #endif
diff -rc2P libbash-original//src/cppbash_builtin.cpp libbash-modified//src/cppbash_builtin.cpp
*** libbash-original//src/cppbash_builtin.cpp	Thu Apr 12 15:48:50 2012
--- libbash-modified//src/cppbash_builtin.cpp	Thu Apr 12 17:48:17 2012
***************
*** 45,48 ****
--- 45,49 ----
  #include "builtins/source_builtin.h"
  #include "builtins/unset_builtin.h"
+ #include "builtins/set_builtin.h"
  
  namespace qi = boost::spirit::qi;
***************
*** 74,77 ****
--- 75,79 ----
        {"let", boost::factory<let_builtin*>()},
        {"unset", boost::factory<unset_builtin*>()},
+       {"set", boost::factory<set_builtin*>()},
    });
    return *p;