Bugfixes. CMD args handling. Code cleanup

Examples/test-suite/lua/member_pointer_runme.lua

@@ -1,43 +1,46 @@
 --Example using pointers to member functions
-
 require("import")	-- the import fn
 import("member_pointer")	-- import code
+mp = member_pointer
 
-for k,v in pairs(member_pointer) do _G[k]=v end
+-- catching undefined variables
+local env = _ENV -- Lua 5.2
+if not env then env = getfenv () end -- Lua 5.1
+setmetatable(env, {__index=function (t,i) error("undefined global variable `"..i.."'",2) end})
 
 function check(what, expected, actual)
 	assert(expected == actual,"Failed: "..what.." Expected: "..expected.." Actual: "..actual)
 end
 
 -- Get the pointers
-area_pt = areapt()
-perim_pt = perimeterpt()
+area_pt = mp.areapt()
+perim_pt = mp.perimeterpt()
 
 -- Create some objects
-s = Square(10)
+s = mp.Square(10)
 
 -- Do some calculations
-check ("Square area ", 100.0, do_op(s,area_pt))
-check ("Square perim", 40.0, do_op(s,perim_pt))
+check ("Square area ", 100.0, mp.do_op(s,area_pt))
+check ("Square perim", 40.0, mp.do_op(s,perim_pt))
 
 -- Try the variables
 -- these have to still be part of the 'member_pointer' table
-memberPtr = member_pointer.areavar
-memberPtr = member_pointer.perimetervar
+memberPtr = mp.areavar
+memberPtr = mp.perimetervar
 
-check ("Square area ", 100.0, do_op(s,member_pointer.areavar))
-check ("Square perim", 40.0, do_op(s,member_pointer.perimetervar))
+check ("Square area ", 100.0, mp.do_op(s,mp.areavar))
+check ("Square perim", 40.0, mp.do_op(s,mp.perimetervar))
 
 -- Modify one of the variables
-member_pointer.areavar = perim_pt
+mp.areavar = perim_pt
 
-check ("Square perimeter", 40.0, do_op(s,member_pointer.areavar))
+check ("Square perimeter", 40.0, mp.do_op(s,mp.areavar))
 
 -- Try the constants
-memberPtr = AREAPT
-memberPtr = PERIMPT
-memberPtr = NULLPT
+memberPtr = mp.AREAPT
+memberPtr = mp.PERIMPT
+memberPtr = mp.NULLPT
 
-check ("Square area ", 100.0, do_op(s,AREAPT))
-check ("Square perim", 40.0, do_op(s,PERIMPT))
+check ("Square area ", 100.0, mp.do_op(s,mp.AREAPT))
+check ("Square perim", 40.0, mp.do_op(s,mp.PERIMPT))