diff --git a/lauxlib.c b/lauxlib.c
index 402dcd80..e4b73903 100644
--- a/lauxlib.c
+++ b/lauxlib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lauxlib.c,v 1.158 2006/01/16 12:42:21 roberto Exp roberto $
+** $Id: lauxlib.c,v 1.159 2006/03/21 19:31:09 roberto Exp roberto $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -535,7 +535,7 @@ static const char *getF (lua_State *L, void *ud, size_t *size) {
     return "\n";
   }
   if (feof(lf->f)) return NULL;
-  *size = fread(lf->buff, 1, LUAL_BUFFERSIZE, lf->f);
+  *size = fread(lf->buff, 1, sizeof(lf->buff), lf->f);
   return (*size > 0) ? lf->buff : NULL;
 }
 
diff --git a/lcode.c b/lcode.c
index b8ba2a98..ca4e884f 100644
--- a/lcode.c
+++ b/lcode.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lcode.c,v 2.24 2005/12/22 16:19:56 roberto Exp roberto $
+** $Id: lcode.c,v 2.25 2006/03/21 19:28:49 roberto Exp roberto $
 ** Code generator for Lua
 ** See Copyright Notice in lua.h
 */
@@ -221,24 +221,28 @@ static void freeexp (FuncState *fs, expdesc *e) {
 }
 
 
-static int addk (FuncState *fs, TValue *k, TValue *v) {
+static int addk (FuncState *fs, TValue *key, TValue *v) {
   lua_State *L = fs->L;
-  TValue *idx = luaH_set(L, fs->h, k);
+  TValue *idx = luaH_set(L, fs->h, key);
   Proto *f = fs->f;
-  int oldsize = f->sizek;
+  int k;
   if (ttisnumber(idx)) {
-    lua_assert(luaO_rawequalObj(&fs->f->k[cast_int(nvalue(idx))], v));
-    return cast_int(nvalue(idx));
+    lua_Number n = nvalue(idx);
+    lua_number2int(k, n);
+    lua_assert(luaO_rawequalObj(&f->k[k], v));
   }
   else {  /* constant not found; create a new entry */
-    setnvalue(idx, cast_num(fs->nk));
-    luaM_growvector(L, f->k, fs->nk, f->sizek, TValue,
-                    MAXARG_Bx, "constant table overflow");
+    int oldsize = f->sizek;
+    k = fs->nk;
+    setnvalue(idx, cast_num(k));
+    luaM_growvector(L, f->k, k, f->sizek, TValue, MAXARG_Bx,
+                       "constant table overflow");
     while (oldsize < f->sizek) setnilvalue(&f->k[oldsize++]);
-    setobj(L, &f->k[fs->nk], v);
+    setobj(L, &f->k[k], v);
+    fs->nk++;
     luaC_barrier(L, f, v);
-    return fs->nk++;
   }
+  return k;
 }
 
 
diff --git a/liolib.c b/liolib.c
index 7c2d3147..e5d644c6 100644
--- a/liolib.c
+++ b/liolib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: liolib.c,v 2.72 2006/01/28 12:59:13 roberto Exp roberto $
+** $Id: liolib.c,v 2.73 2006/05/08 20:14:16 roberto Exp roberto $
 ** Standard I/O (and system) library
 ** See Copyright Notice in lua.h
 */
@@ -139,7 +139,7 @@ static int io_gc (lua_State *L) {
 static int io_tostring (lua_State *L) {
   FILE *f = *topfile(L);
   if (f == NULL)
-    lua_pushstring(L, "file (closed)");
+    lua_pushliteral(L, "file (closed)");
   else
     lua_pushfstring(L, "file (%p)", f);
   return 1;
diff --git a/loadlib.c b/loadlib.c
index b9ac3761..41082e59 100644
--- a/loadlib.c
+++ b/loadlib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: loadlib.c,v 1.51 2005/12/29 15:32:11 roberto Exp roberto $
+** $Id: loadlib.c,v 1.52 2006/04/10 18:27:23 roberto Exp roberto $
 ** Dynamic library loader for Lua
 ** See Copyright Notice in lua.h
 **
@@ -356,7 +356,7 @@ static const char *findfile (lua_State *L, const char *name,
   path = lua_tostring(L, -1);
   if (path == NULL)
     luaL_error(L, LUA_QL("package.%s") " must be a string", pname);
-  lua_pushstring(L, "");  /* error accumulator */
+  lua_pushliteral(L, "");  /* error accumulator */
   while ((path = pushnexttemplate(L, path)) != NULL) {
     const char *filename;
     filename = luaL_gsub(L, lua_tostring(L, -1), LUA_PATH_MARK, name);
@@ -462,7 +462,7 @@ static int ll_require (lua_State *L) {
   lua_getfield(L, LUA_ENVIRONINDEX, "loaders");
   if (!lua_istable(L, -1))
     luaL_error(L, LUA_QL("package.loaders") " must be a table");
-  lua_pushstring(L, "");  /* error message accumulator */
+  lua_pushliteral(L, "");  /* error message accumulator */
   for (i=1; ; i++) {
     lua_rawgeti(L, -2, i);  /* get a loader */
     if (lua_isnil(L, -1))
@@ -646,8 +646,8 @@ LUALIB_API int luaopen_package (lua_State *L) {
   setpath(L, "path", LUA_PATH, LUA_PATH_DEFAULT);  /* set field `path' */
   setpath(L, "cpath", LUA_CPATH, LUA_CPATH_DEFAULT); /* set field `cpath' */
   /* store config information */
-  lua_pushstring(L, LUA_DIRSEP "\n" LUA_PATHSEP "\n" LUA_PATH_MARK "\n"
-                    LUA_EXECDIR "\n" LUA_IGMARK);
+  lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATHSEP "\n" LUA_PATH_MARK "\n"
+                     LUA_EXECDIR "\n" LUA_IGMARK);
   lua_setfield(L, -2, "config");
   /* set field `loaded' */
   luaL_findtable(L, LUA_REGISTRYINDEX, "_LOADED", 2);
diff --git a/lparser.c b/lparser.c
index f98eb258..d10fcb59 100644
--- a/lparser.c
+++ b/lparser.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lparser.c,v 2.41 2006/03/09 18:15:48 roberto Exp roberto $
+** $Id: lparser.c,v 2.42 2006/06/05 15:57:59 roberto Exp roberto $
 ** Lua Parser
 ** See Copyright Notice in lua.h
 */
@@ -274,8 +274,8 @@ static void adjust_assign (LexState *ls, int nvars, int nexps, expdesc *e) {
 
 
 static void enterlevel (LexState *ls) {
-  if (++ls->L->nCcalls > LUAI_MAXCCALLS)
-	luaX_lexerror(ls, "chunk has too many syntax levels", 0);
+  ++ls->L->nCcalls;
+  luaY_checklimit(ls->fs, ls->L->nCcalls, LUAI_MAXCCALLS, "syntax levels");
 }
 
 
diff --git a/lstrlib.c b/lstrlib.c
index b6eda2cf..ab04b5d5 100644
--- a/lstrlib.c
+++ b/lstrlib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lstrlib.c,v 1.131 2006/04/12 20:13:52 roberto Exp roberto $
+** $Id: lstrlib.c,v 1.132 2006/04/26 20:41:19 roberto Exp roberto $
 ** Standard library for string operations and pattern-matching
 ** See Copyright Notice in lua.h
 */
@@ -185,7 +185,7 @@ typedef struct MatchState {
 static int check_capture (MatchState *ms, int l) {
   l -= '1';
   if (l < 0 || l >= ms->level || ms->capture[l].len == CAP_UNFINISHED)
-    return luaL_error(ms->L, "invalid capture index");
+    return luaL_error(ms->L, "invalid capture index %%%d", l + 1);
   return l;
 }