diff --git a/7.3.820 b/7.3.820
new file mode 100644
index 0000000..df273ab
--- /dev/null
+++ b/7.3.820
@@ -0,0 +1,137 @@
+To: vim_dev@googlegroups.com
+Subject: Patch 7.3.820
+Fcc: outbox
+From: Bram Moolenaar <Bram@moolenaar.net>
+Mime-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+------------
+
+Patch 7.3.820
+Problem:    Build errors and warnings when building with small features and
+	    Lua, Perl or Ruby.
+Solution:   Add #ifdefs and UNUSED.
+Files:	    src/if_perl.xs, src/if_lua.c, src/if_ruby.c
+
+
+*** ../vim-7.3.819/src/if_perl.xs	2013-02-06 19:58:38.000000000 +0100
+--- src/if_perl.xs	2013-02-14 19:16:00.000000000 +0100
+***************
+*** 600,608 ****
+   */
+      char_u *
+  eval_to_string(arg, nextcmd, dolist)
+!     char_u	*arg;
+!     char_u	**nextcmd;
+!     int		dolist;
+  {
+      return NULL;
+  }
+--- 600,608 ----
+   */
+      char_u *
+  eval_to_string(arg, nextcmd, dolist)
+!     char_u	*arg UNUSED;
+!     char_u	**nextcmd UNUSED;
+!     int		dolist UNUSED;
+  {
+      return NULL;
+  }
+*** ../vim-7.3.819/src/if_lua.c	2012-10-14 03:41:54.000000000 +0200
+--- src/if_lua.c	2013-02-14 19:15:29.000000000 +0100
+***************
+*** 845,852 ****
+  }
+  
+      static int
+! luaV_dict_iter (lua_State *L)
+  {
+      hashitem_T *hi = (hashitem_T *) lua_touserdata(L, lua_upvalueindex(2));
+      int n = lua_tointeger(L, lua_upvalueindex(3));
+      dictitem_T *di;
+--- 845,853 ----
+  }
+  
+      static int
+! luaV_dict_iter (lua_State *L UNUSED)
+  {
++ #ifdef FEAT_EVAL
+      hashitem_T *hi = (hashitem_T *) lua_touserdata(L, lua_upvalueindex(2));
+      int n = lua_tointeger(L, lua_upvalueindex(3));
+      dictitem_T *di;
+***************
+*** 860,865 ****
+--- 861,869 ----
+      lua_pushinteger(L, n - 1);
+      lua_replace(L, lua_upvalueindex(3));
+      return 2;
++ #else
++     return 0;
++ #endif
+  }
+  
+      static int
+*** ../vim-7.3.819/src/if_ruby.c	2012-11-24 13:38:56.000000000 +0100
+--- src/if_ruby.c	2013-02-14 22:18:50.000000000 +0100
+***************
+*** 1210,1230 ****
+      return height;
+  }
+  
+! static VALUE window_width(VALUE self)
+  {
+!     win_T *win = get_win(self);
+! 
+!     return INT2NUM(win->w_width);
+  }
+  
+! static VALUE window_set_width(VALUE self, VALUE width)
+  {
+      win_T *win = get_win(self);
+      win_T *savewin = curwin;
+  
+      curwin = win;
+      win_setwidth(NUM2INT(width));
+      curwin = savewin;
+      return width;
+  }
+  
+--- 1210,1230 ----
+      return height;
+  }
+  
+! static VALUE window_width(VALUE self UNUSED)
+  {
+!     return INT2NUM(W_WIDTH(get_win(self)));
+  }
+  
+! static VALUE window_set_width(VALUE self UNUSED, VALUE width)
+  {
++ #ifdef FEAT_VERTSPLIT
+      win_T *win = get_win(self);
+      win_T *savewin = curwin;
+  
+      curwin = win;
+      win_setwidth(NUM2INT(width));
+      curwin = savewin;
++ #endif
+      return width;
+  }
+  
+*** ../vim-7.3.819/src/version.c	2013-02-14 22:11:31.000000000 +0100
+--- src/version.c	2013-02-14 22:19:09.000000000 +0100
+***************
+*** 727,728 ****
+--- 727,730 ----
+  {   /* Add new patch number below this line */
++ /**/
++     820,
+  /**/
+
+-- 
+Did Adam and Eve have navels?
+
+ /// Bram Moolenaar -- Bram@Moolenaar.net -- http://www.Moolenaar.net   \\\
+///        sponsor Vim, vote for features -- http://www.Vim.org/sponsor/ \\\
+\\\  an exciting new programming language -- http://www.Zimbu.org        ///
+ \\\            help me help AIDS victims -- http://ICCF-Holland.org    ///