diff --git a/lapi.c b/lapi.c
index acc991c3..924a9124 100644
--- a/lapi.c
+++ b/lapi.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lapi.c,v 2.157 2011/11/16 18:51:36 roberto Exp roberto $
+** $Id: lapi.c,v 2.158 2011/11/29 15:55:08 roberto Exp roberto $
 ** Lua API
 ** See Copyright Notice in lua.h
 */
@@ -1209,7 +1209,7 @@ static const char *aux_upvalue (StkId fi, int n, TValue **val,
 
 LUA_API const char *lua_getupvalue (lua_State *L, int funcindex, int n) {
   const char *name;
-  TValue *val = NULL;  /* initialized to avoid warnings */
+  TValue *val = NULL;  /* to avoid warnings */
   lua_lock(L);
   name = aux_upvalue(index2addr(L, funcindex), n, &val, NULL);
   if (name) {
@@ -1223,8 +1223,8 @@ LUA_API const char *lua_getupvalue (lua_State *L, int funcindex, int n) {
 
 LUA_API const char *lua_setupvalue (lua_State *L, int funcindex, int n) {
   const char *name;
-  TValue *val = NULL;  /* initialized to avoid warnings */
-  GCObject *owner = NULL;  /* initialized to avoid warnings */
+  TValue *val = NULL;  /* to avoid warnings */
+  GCObject *owner = NULL;  /* to avoid warnings */
   StkId fi;
   lua_lock(L);
   fi = index2addr(L, funcindex);
diff --git a/lauxlib.c b/lauxlib.c
index fa17dfbd..e08da9bc 100644
--- a/lauxlib.c
+++ b/lauxlib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lauxlib.c,v 1.236 2011/11/14 17:10:24 roberto Exp roberto $
+** $Id: lauxlib.c,v 1.237 2011/11/29 15:55:08 roberto Exp roberto $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -567,7 +567,7 @@ typedef struct LoadF {
 
 static const char *getF (lua_State *L, void *ud, size_t *size) {
   LoadF *lf = (LoadF *)ud;
-  (void)L;
+  (void)L;  /* not used */
   if (lf->n > 0) {  /* are there pre-read characters to be read? */
     *size = lf->n;  /* return them (chars already in buffer) */
     lf->n = 0;  /* no more pre-read characters */
@@ -668,7 +668,7 @@ typedef struct LoadS {
 
 static const char *getS (lua_State *L, void *ud, size_t *size) {
   LoadS *ls = (LoadS *)ud;
-  (void)L;
+  (void)L;  /* not used */
   if (ls->size == 0) return NULL;
   *size = ls->size;
   ls->size = 0;
@@ -915,8 +915,7 @@ LUALIB_API const char *luaL_gsub (lua_State *L, const char *s, const char *p,
 
 
 static void *l_alloc (void *ud, void *ptr, size_t osize, size_t nsize) {
-  (void)ud;
-  (void)osize;
+  (void)ud; (void)osize;  /* not used */
   if (nsize == 0) {
     free(ptr);
     return NULL;
diff --git a/loadlib.c b/loadlib.c
index e0e4c393..02787ef7 100644
--- a/loadlib.c
+++ b/loadlib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: loadlib.c,v 1.105 2011/11/25 12:52:03 roberto Exp roberto $
+** $Id: loadlib.c,v 1.106 2011/11/28 17:27:51 roberto Exp roberto $
 ** Dynamic library loader for Lua
 ** See Copyright Notice in lua.h
 **
@@ -197,7 +197,7 @@ static void ll_unloadlib (void *lib) {
 
 static void *ll_load (lua_State *L, const char *path, int seeglb) {
   HMODULE lib = LoadLibraryExA(path, NULL, LUA_LLE_FLAGS);
-  (void)(seeglb);  /* symbols are 'global' by default */
+  (void)(seeglb);  /* not used: symbols are 'global' by default */
   if (lib == NULL) pusherror(L);
   return lib;
 }
@@ -227,19 +227,19 @@ static lua_CFunction ll_sym (lua_State *L, void *lib, const char *sym) {
 
 
 static void ll_unloadlib (void *lib) {
-  (void)(lib);  /* to avoid warnings */
+  (void)(lib);  /* not used */
 }
 
 
 static void *ll_load (lua_State *L, const char *path, int seeglb) {
-  (void)(path); (void)(seeglb);  /* to avoid warnings */
+  (void)(path); (void)(seeglb);  /* not used */
   lua_pushliteral(L, DLMSG);
   return NULL;
 }
 
 
 static lua_CFunction ll_sym (lua_State *L, void *lib, const char *sym) {
-  (void)(lib); (void)(sym);  /* to avoid warnings */
+  (void)(lib); (void)(sym);  /* not used */
   lua_pushliteral(L, DLMSG);
   return NULL;
 }