lua update to 5.1.5

Modify Rocklua towards upstream 5.1.5

Clean up some of the Rocklua implementation

Change-Id: Iac722e827899cf84f5ca004ef7ae7ddce5f7fbbe

15 files changed, 124 insertions, 105 deletions

diff --git a/apps/plugins/lua/lauxlib.c b/apps/plugins/lua/lauxlib.c
index b8020b7475..9597f63c60 100644
--- a/apps/plugins/lua/lauxlib.c
+++ b/apps/plugins/lua/lauxlib.c
@@ -199,7 +199,7 @@ LUALIB_API lua_Integer luaL_optinteger (lua_State *L, int narg,
   return luaL_opt(L, luaL_checkinteger, narg, def);
 }
 
-
+/* ROCKLUA ADDED */
 LUALIB_API int luaL_checkboolean (lua_State *L, int narg) {
   int b = lua_toboolean(L, narg);
   if( b == 0 && !lua_isboolean(L, narg))
@@ -207,7 +207,7 @@ LUALIB_API int luaL_checkboolean (lua_State *L, int narg) {
   return b;
 }
 
-
+/* ROCKLUA ADDED */
 LUALIB_API int luaL_optboolean (lua_State *L, int narg, int def) {
   return luaL_opt(L, luaL_checkboolean, narg, def);
 }
@@ -538,7 +538,7 @@ typedef struct LoadF {
   char buff[LUAL_BUFFERSIZE];
 } LoadF;
 
-static const char *getF(lua_State *L, void *ud, size_t *size) {
+static const char *getF (lua_State *L, void *ud, size_t *size) {
   LoadF *lf = (LoadF *)ud;
   (void)L;
   if (lf->extraline) {
@@ -547,7 +547,6 @@ static const char *getF(lua_State *L, void *ud, size_t *size) {
     return "\n";
   }
   *size = rb->read(lf->f, lf->buff, LUAL_BUFFERSIZE);
-  if (*size <= 0) return NULL;
   return (*size > 0) ? lf->buff : NULL;
 }
 
diff --git a/apps/plugins/lua/lauxlib.h b/apps/plugins/lua/lauxlib.h
index a36de351fe..4b4f3be1db 100644
--- a/apps/plugins/lua/lauxlib.h
+++ b/apps/plugins/lua/lauxlib.h
@@ -1,5 +1,5 @@
 /*
-** $Id$
+** $Id: lauxlib.h,v 1.88.1.1 2007/12/27 13:02:25 roberto Exp $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -58,7 +58,7 @@ LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int numArg);
 LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int nArg,
                                           lua_Integer def);
 
-LUALIB_API int (luaL_checkboolean) (lua_State *L, int numArg);
+LUALIB_API int (luaL_checkboolean) (lua_State *L, int nArg);
 LUALIB_API int (luaL_optboolean) (lua_State *L, int nArg,
                                   int def);
 
diff --git a/apps/plugins/lua/lbaselib.c b/apps/plugins/lua/lbaselib.c
index 008e3629fe..ad94984191 100644
--- a/apps/plugins/lua/lbaselib.c
+++ b/apps/plugins/lua/lbaselib.c
@@ -225,6 +225,24 @@ static int luaB_type (lua_State *L) {
 }
 
 
+/** $Id: lbaselib.c,v 1.276.1.1 2013/04/12 18:48:47 roberto Exp $ */
+static int pairsmeta (lua_State *L, const char *method, int iszero,
+                      lua_CFunction iter) {
+  if (!luaL_getmetafield(L, 1, method)) {  /* no metamethod? */
+    luaL_checktype(L, 1, LUA_TTABLE);  /* argument must be a table */
+    lua_pushcfunction(L, iter);  /* will return generator, */
+    lua_pushvalue(L, 1);  /* state, */
+    if (iszero) lua_pushinteger(L, 0);  /* and initial value */
+    else lua_pushnil(L);
+  }
+  else {
+    lua_pushvalue(L, 1);  /* argument 'self' to metamethod */
+    lua_call(L, 1, 3);  /* get 3 values from metamethod */
+  }
+  return 3;
+}
+
+
 static int luaB_next (lua_State *L) {
   luaL_checktype(L, 1, LUA_TTABLE);
   lua_settop(L, 2);  /* create a 2nd argument if there isn't one */
@@ -238,11 +256,8 @@ static int luaB_next (lua_State *L) {
 
 
 static int luaB_pairs (lua_State *L) {
-  luaL_checktype(L, 1, LUA_TTABLE);
-  lua_pushvalue(L, lua_upvalueindex(1));  /* return generator, */
-  lua_pushvalue(L, 1);  /* state, */
-  lua_pushnil(L);  /* and initial value */
-  return 3;
+  /* pairs function from lua 5.2 */
+  return pairsmeta(L, "__pairs", 0, luaB_next);
 }
 
 
@@ -252,16 +267,13 @@ static int ipairsaux (lua_State *L) {
   i++;  /* next value */
   lua_pushinteger(L, i);
   lua_rawgeti(L, 1, i);
-  return (lua_isnil(L, -1)) ? 0 : 2;
+  return (lua_isnil(L, -1)) ? 1 : 2;
 }
 
 
 static int luaB_ipairs (lua_State *L) {
-  luaL_checktype(L, 1, LUA_TTABLE);
-  lua_pushvalue(L, lua_upvalueindex(1));  /* return generator, */
-  lua_pushvalue(L, 1);  /* state, */
-  lua_pushinteger(L, 0);  /* and initial value */
-  return 3;
+  return pairsmeta(L, "__ipairs", 1, ipairsaux);
+  /* ipairs function from lua 5.2 */
 }
 
 
@@ -454,10 +466,12 @@ static const luaL_Reg base_funcs[] = {
   {"gcinfo", luaB_gcinfo},
   {"getfenv", luaB_getfenv},
   {"getmetatable", luaB_getmetatable},
+  {"ipairs", luaB_ipairs},
   {"loadfile", luaB_loadfile},
   {"load", luaB_load},
   {"loadstring", luaB_loadstring},
   {"next", luaB_next},
+  {"pairs", luaB_pairs},
   {"pcall", luaB_pcall},
 #if 0
   {"print", luaB_print},
@@ -619,14 +633,6 @@ static const luaL_Reg co_funcs[] = {
 /* }====================================================== */
 
 
-static void auxopen (lua_State *L, const char *name,
-                     lua_CFunction f, lua_CFunction u) {
-  lua_pushcfunction(L, u);
-  lua_pushcclosure(L, f, 1);
-  lua_setfield(L, -2, name);
-}
-
-
 static void base_open (lua_State *L) {
   /* set global _G */
   lua_pushvalue(L, LUA_GLOBALSINDEX);
@@ -635,9 +641,6 @@ static void base_open (lua_State *L) {
   luaL_register(L, "_G", base_funcs);
   lua_pushliteral(L, LUA_VERSION);
   lua_setglobal(L, "_VERSION");  /* set global _VERSION */
-  /* `ipairs' and `pairs' need auxliliary functions as upvalues */
-  auxopen(L, "ipairs", luaB_ipairs, ipairsaux);
-  auxopen(L, "pairs", luaB_pairs, luaB_next);
   /* `newproxy' needs a weaktable as upvalue */
   lua_createtable(L, 0, 1);  /* new table `w' */
   lua_pushvalue(L, -1);  /* `w' will be its own metatable */
diff --git a/apps/plugins/lua/lcode.c b/apps/plugins/lua/lcode.c
index cc26ac7521..07f9cbe4c4 100644
--- a/apps/plugins/lua/lcode.c
+++ b/apps/plugins/lua/lcode.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lcode.c,v 2.25.1.3 2007/12/28 15:32:23 roberto Exp $
+** $Id: lcode.c,v 2.25.1.5 2011/01/31 14:53:16 roberto Exp $
 ** Code generator for Lua
 ** See Copyright Notice in lua.h
 */
@@ -544,10 +544,6 @@ void luaK_goiftrue (FuncState *fs, expdesc *e) {
       pc = NO_JUMP;  /* always true; do nothing */
       break;
     }
-    case VFALSE: {
-      pc = luaK_jump(fs);  /* always jump */
-      break;
-    }
     case VJMP: {
       invertjump(fs, e);
       pc = e->u.s.info;
@@ -572,10 +568,6 @@ static void luaK_goiffalse (FuncState *fs, expdesc *e) {
       pc = NO_JUMP;  /* always false; do nothing */
       break;
     }
-    case VTRUE: {
-      pc = luaK_jump(fs);  /* always jump */
-      break;
-    }
     case VJMP: {
       pc = e->u.s.info;
       break;
@@ -641,10 +633,10 @@ static int constfolding (OpCode op, expdesc *e1, expdesc *e2) {
     case OP_ADD: r = luai_numadd(v1, v2); break;
     case OP_SUB: r = luai_numsub(v1, v2); break;
     case OP_MUL: r = luai_nummul(v1, v2); break;
-    case OP_DIV:
+    case OP_DIV: /* ROCKLUA BUGFIX */
       if (v2 == 0) return -1;  /* do not attempt to divide by 0 */
       r = luai_numdiv(v1, v2); break;
-    case OP_MOD:
+    case OP_MOD: /* ROCKLUA BUGFIX */
       if (v2 == 0) return -1;  /* do not attempt to divide by 0 */
       r = luai_nummod(v1, v2); break;
     case OP_POW: r = luai_numpow(v1, v2); break;
@@ -659,7 +651,7 @@ static int constfolding (OpCode op, expdesc *e1, expdesc *e2) {
 
 
 static void codearith (FuncState *fs, OpCode op, expdesc *e1, expdesc *e2) {
-  int resf = constfolding(op, e1, e2);
+  int resf = constfolding(op, e1, e2);  /* ROCKLUA BUGFIX */
   if (resf > 0)
     return;
   else if (resf == 0) {
diff --git a/apps/plugins/lua/ldo.c b/apps/plugins/lua/ldo.c
index f303c744c7..43266de95e 100644
--- a/apps/plugins/lua/ldo.c
+++ b/apps/plugins/lua/ldo.c
@@ -1,5 +1,5 @@
 /*
-** $Id: ldo.c,v 2.38.1.3 2008/01/18 22:31:22 roberto Exp $
+** $Id: ldo.c,v 2.38.1.4 2012/01/18 02:27:10 roberto Exp $
 ** Stack and Call structure of Lua
 ** See Copyright Notice in lua.h
 */
@@ -217,6 +217,7 @@ static StkId adjust_varargs (lua_State *L, Proto *p, int actual) {
     int nvar = actual - nfixargs;  /* number of extra arguments */
     lua_assert(p->is_vararg & VARARG_HASARG);
     luaC_checkGC(L);
+    luaD_checkstack(L, p->maxstacksize);
     htab = luaH_new(L, nvar, 1);  /* create `arg' table */
     for (i=0; i<nvar; i++)  /* put extra arguments into `arg' table */
       setobj2n(L, luaH_setnum(L, htab, i+1), L->top - nvar + i);
diff --git a/apps/plugins/lua/lgc.c b/apps/plugins/lua/lgc.c
index d9e0b78294..e909c79a96 100644
--- a/apps/plugins/lua/lgc.c
+++ b/apps/plugins/lua/lgc.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lgc.c,v 2.38.1.1 2007/12/27 13:02:25 roberto Exp $
+** $Id: lgc.c,v 2.38.1.2 2011/03/18 18:05:38 roberto Exp $
 ** Garbage Collector
 ** See Copyright Notice in lua.h
 */
@@ -627,7 +627,6 @@ void luaC_step (lua_State *L) {
     }
   }
   else {
-    lua_assert(g->totalbytes >= g->estimate);
     setthreshold(g);
   }
 }
diff --git a/apps/plugins/lua/liolib.c b/apps/plugins/lua/liolib.c
index fb6765492b..81edb9a534 100644
--- a/apps/plugins/lua/liolib.c
+++ b/apps/plugins/lua/liolib.c
@@ -40,7 +40,7 @@ static int pushresult (lua_State *L, int i, const char *filename) {
       lua_pushfstring(L, "%s: %s", filename, strerror(en));
     else
       lua_pushfstring(L, "%s", strerror(en));
-    lua_pushinteger(L, 0);
+    lua_pushinteger(L, en);
     return 3;
   }
 }
@@ -51,6 +51,7 @@ static void fileerror (lua_State *L, int arg, const char *filename) {
   luaL_argerror(L, arg, lua_tostring(L, -1));
 }
 
+#define tofilep(L)	((int*) luaL_checkudata(L, 1, LUA_FILEHANDLE))
 
 static int io_type (lua_State *L) {
   void *ud;
@@ -68,7 +69,7 @@ static int io_type (lua_State *L) {
 
 
 static int* tofile (lua_State *L) {
-  int *f = (int*) luaL_checkudata(L, 1, LUA_FILEHANDLE);
+  int *f = tofilep(L);
   if (*f < 0)
     luaL_error(L, "attempt to use a closed file");
   return f;
@@ -115,20 +116,20 @@ static int io_close (lua_State *L) {
 
 
 static int io_gc (lua_State *L) {
-  int f = *(int*) luaL_checkudata(L, 1, LUA_FILEHANDLE);
+  int *f = tofilep(L);
   /* ignore closed files */
-  if (f >= 0)
+  if (*f >= 0)
     aux_close(L);
   return 0;
 }
 
 
 static int io_tostring (lua_State *L) {
-  int f = *(int*) luaL_checkudata(L, 1, LUA_FILEHANDLE);
-  if (f < 0)
+  int *f = tofilep(L);
+  if (*f < 0)
     lua_pushliteral(L, "file (closed)");
   else
-    lua_pushfstring(L, "file (%d)", f);
+    lua_pushfstring(L, "file (%d)", *f);
   return 1;
 }
 
@@ -137,28 +138,33 @@ static int io_open (lua_State *L) {
   const char *filename = luaL_checkstring(L, 1);
   const char *mode = luaL_optstring(L, 2, "r");
   int *pf = newfile(L);
-  int flags = 0;
-  if(*(mode+1) == '+') {
-    flags = O_RDWR;
-    switch(*mode) {
-        case 'w':
-            flags |= O_TRUNC; break;
-        case 'a':
-            flags |= O_APPEND; break;
-    }
-  }
-  else {
-    switch(*mode) {
-        case 'r':
-            flags = O_RDONLY; break;
-        case 'w':
-            flags = O_WRONLY | O_TRUNC; break;
-        case 'a':
-            flags = O_WRONLY | O_APPEND; break;
-    }
+  int flags, wrmode;
+
+  switch(*mode) {
+      case 'r':
+          flags  = O_RDONLY;
+          wrmode = 0;
+          break;
+      case 'w':
+          flags  = O_WRONLY;
+          wrmode = O_CREAT | O_TRUNC;
+          break;
+      case 'a':
+          flags  = O_WRONLY;
+          wrmode = O_CREAT | O_APPEND;
+          break;
+      default:
+          flags  = 0;
+          wrmode = 0;
+          return luaL_error(L, "invalid option " LUA_QL("%c") " to "
+                               LUA_QL("open"), *mode);
   }
-  if((*mode == 'w' || *mode == 'a') && !rb->file_exists(filename))
-    flags |= O_CREAT;
+
+  if(*(mode+1) == '+')
+    flags = O_RDWR;
+
+  flags |= wrmode;
+
   *pf = rb->open(filename, flags, 0666);
   return (*pf < 0) ? pushresult(L, 0, filename) : 1;
 }
@@ -252,7 +258,10 @@ static int read_number (lua_State *L, int *f) {
     lua_pushnumber(L, d);
     return 1;
   }
-  else return 0;  /* read fails */
+  else {
+    lua_pushnil(L);  /* "result" to be removed */
+    return 0;  /* read fails */
+  }
 }
 
 
@@ -412,14 +421,14 @@ static int f_write (lua_State *L) {
 static int f_seek (lua_State *L) {
   static const int mode[] = {SEEK_SET, SEEK_CUR, SEEK_END};
   static const char *const modenames[] = {"set", "cur", "end", NULL};
-  int f = *tofile(L);
+  int *f = tofile(L);
   int op = luaL_checkoption(L, 2, "cur", modenames);
   long offset = luaL_optlong(L, 3, 0);
-  off_t size = rb->lseek(f, offset, mode[op]);
+  off_t size = rb->lseek(*f, offset, mode[op]);
   if (size < 0 || size > MAX_INT)   /* signed limit */
     return pushresult(L, 0, NULL);  /* error */
   else {
-     lua_pushinteger(L, (LUA_INTEGER) size );
+    lua_pushinteger(L, (LUA_INTEGER) size );
     return 1;
   }
 }
diff --git a/apps/plugins/lua/llex.c b/apps/plugins/lua/llex.c
index 85ac516be3..6f78d48983 100644
--- a/apps/plugins/lua/llex.c
+++ b/apps/plugins/lua/llex.c
@@ -1,5 +1,5 @@
 /*
-** $Id: llex.c,v 2.20.1.1 2007/12/27 13:02:25 roberto Exp $
+** $Id: llex.c,v 2.20.1.2 2009/11/23 14:58:22 roberto Exp $
 ** Lexical Analyzer
 ** See Copyright Notice in lua.h
 */
@@ -118,8 +118,10 @@ TString *luaX_newstring (LexState *ls, const char *str, size_t l) {
   lua_State *L = ls->L;
   TString *ts = luaS_newlstr(L, str, l);
   TValue *o = luaH_setstr(L, ls->fs->h, ts);  /* entry for `str' */
-  if (ttisnil(o))
+  if (ttisnil(o)) {
     setbvalue(o, 1);  /* make sure `str' will not be collected */
+    luaC_checkGC(L);
+  }
   return ts;
 }
 
diff --git a/apps/plugins/lua/lmathlib.c b/apps/plugins/lua/lmathlib.c
index 99a104050c..56c79afced 100644
--- a/apps/plugins/lua/lmathlib.c
+++ b/apps/plugins/lua/lmathlib.c
@@ -82,19 +82,17 @@ static int math_atan2 (lua_State *L) {
   lua_pushnumber(L, atan2(luaL_checknumber(L, 1), luaL_checknumber(L, 2)));
   return 1;
 }
-#endif
 
 static int math_ceil (lua_State *L) {
-  /* Doesn't change anything in fixed point arithmetic */
-  lua_pushnumber(L, luaL_checknumber(L, 1));
+  lua_pushnumber(L, ceil(luaL_checknumber(L, 1)));
   return 1;
 }
 
 static int math_floor (lua_State *L) {
-  /* Doesn't change anything in fixed point arithmetic */
-  lua_pushnumber(L, luaL_checknumber(L, 1));
+  lua_pushnumber(L, floor(luaL_checknumber(L, 1)));
   return 1;
 }
+#endif
 
 static int math_fmod (lua_State *L) {
   /* Was: lua_pushnumber(L, fmod(luaL_checknumber(L, 1), luaL_checknumber(L, 2))); */
@@ -220,6 +218,11 @@ static int math_randomseed (lua_State *L) {
   return 0;
 }
 
+static int math_ident (lua_State *L) { /* ROCKLUA ADDED */
+  /* Ceil & floor Doesn't change anything in fixed point arithmetic */
+  lua_pushnumber(L, luaL_checknumber(L, 1));
+  return 1;
+}
 
 static const luaL_Reg mathlib[] = {
   {"abs",   math_abs},
@@ -228,17 +231,15 @@ static const luaL_Reg mathlib[] = {
   {"asin",  math_asin},
   {"atan2", math_atan2},
   {"atan",  math_atan},
-#endif
   {"ceil",  math_ceil},
-#if 0
   {"cosh",  math_cosh},
   {"cos",   math_cos},
 #endif
   {"deg",   math_deg},
 #if 0
   {"exp",   math_exp},
-#endif
   {"floor", math_floor},
+#endif
   {"fmod",  math_fmod},
 #if 0
   {"frexp", math_frexp},
@@ -262,6 +263,8 @@ static const luaL_Reg mathlib[] = {
   {"tanh",  math_tanh},
   {"tan",   math_tan},
 #endif
+  {"ceil",  math_ident},
+  {"floor",  math_ident},
   {NULL, NULL}
 };
 
diff --git a/apps/plugins/lua/loadlib.c b/apps/plugins/lua/loadlib.c
index 87873f133f..1e310beed1 100644
--- a/apps/plugins/lua/loadlib.c
+++ b/apps/plugins/lua/loadlib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: loadlib.c,v 1.52.1.3 2008/08/06 13:29:28 roberto Exp $
+** $Id: loadlib.c,v 1.52.1.4 2009/09/09 13:17:16 roberto Exp $
 ** Dynamic library loader for Lua
 ** See Copyright Notice in lua.h
 **
@@ -21,9 +21,9 @@
 #include "lauxlib.h"
 #include "lualib.h"
 #include "rocklib.h"
+#include "rocklibc.h"
 
-
-#define setprogdir(L)       ((void)0)
+#define setprogdir(L)       ((void)0) /* ROCKLUA ADDED */
 
 
 /*
@@ -54,7 +54,7 @@ static const char *pushnexttemplate (lua_State *L, const char *path) {
 
 static const char *findfile (lua_State *L, const char *name,
                                            const char *pname) {
-  get_current_path(L, 2);
+  get_current_path(L, 2); /* ROCKLUA ADDED */
   const char *current_path = lua_tostring(L, -1);
   const char *path;
 
@@ -196,7 +196,7 @@ static void modinit (lua_State *L, const char *modname) {
   lua_setfield(L, -2, "_M");  /* module._M = module */
   lua_pushstring(L, modname);
   lua_setfield(L, -2, "_NAME");
-  dot = rb->strrchr(modname, '.');  /* look for last dot in module name */
+  dot = strrchr(modname, '.');  /* look for last dot in module name */
   if (dot == NULL) dot = modname;
   else dot++;
   /* set _PACKAGE as package name (full module name minus last part) */
@@ -292,7 +292,7 @@ LUALIB_API int luaopen_package (lua_State *L) {
   lua_pushvalue(L, -1);
   lua_replace(L, LUA_ENVIRONINDEX);
   /* create `loaders' table */
-  lua_createtable(L, 0, sizeof(loaders)/sizeof(loaders[0]) - 1);
+  lua_createtable(L, sizeof(loaders)/sizeof(loaders[0]) - 1, 0);
   /* fill it with pre-defined loaders */
   for (i=0; loaders[i] != NULL; i++) {
     lua_pushcfunction(L, loaders[i]);
diff --git a/apps/plugins/lua/lparser.c b/apps/plugins/lua/lparser.c
index 800cdb1a3b..dda7488dca 100644
--- a/apps/plugins/lua/lparser.c
+++ b/apps/plugins/lua/lparser.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lparser.c,v 2.42.1.3 2007/12/28 15:32:23 roberto Exp $
+** $Id: lparser.c,v 2.42.1.4 2011/10/21 19:31:42 roberto Exp $
 ** Lua Parser
 ** See Copyright Notice in lua.h
 */
@@ -325,7 +325,7 @@ static void pushclosure (LexState *ls, FuncState *func, expdesc *v) {
 }
 
 
-static void lparser_open_func (LexState *ls, FuncState *fs) {
+static void open_func (LexState *ls, FuncState *fs) {
   lua_State *L = ls->L;
   Proto *f = luaF_newproto(L);
   fs->f = f;
@@ -374,9 +374,9 @@ static void close_func (LexState *ls) {
   lua_assert(luaG_checkcode(f));
   lua_assert(fs->bl == NULL);
   ls->fs = fs->prev;
-  L->top -= 2;  /* remove table and prototype from the stack */
   /* last token read was anchored in defunct function; must reanchor it */
   if (fs) anchor_token(ls);
+  L->top -= 2;  /* remove table and prototype from the stack */
 }
 
 
@@ -385,7 +385,7 @@ Proto *luaY_parser (lua_State *L, ZIO *z, Mbuffer *buff, const char *name) {
   struct FuncState funcstate;
   lexstate.buff = buff;
   luaX_setinput(L, &lexstate, z, luaS_new(L, name));
-  lparser_open_func(&lexstate, &funcstate);
+  open_func(&lexstate, &funcstate);
   funcstate.f->is_vararg = VARARG_ISVARARG;  /* main func. is always vararg */
   luaX_next(&lexstate);  /* read first token */
   chunk(&lexstate);
@@ -576,7 +576,7 @@ static void parlist (LexState *ls) {
 static void body (LexState *ls, expdesc *e, int needself, int line) {
   /* body ->  `(' parlist `)' chunk END */
   FuncState new_fs;
-  lparser_open_func(ls, &new_fs);
+  open_func(ls, &new_fs);
   new_fs.f->linedefined = line;
   checknext(ls, '(');
   if (needself) {
diff --git a/apps/plugins/lua/lstrlib.c b/apps/plugins/lua/lstrlib.c
index 3d6103692f..8b39314e93 100644
--- a/apps/plugins/lua/lstrlib.c
+++ b/apps/plugins/lua/lstrlib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lstrlib.c,v 1.132.1.4 2008/07/11 17:27:21 roberto Exp $
+** $Id: lstrlib.c,v 1.132.1.5 2010/05/14 15:34:19 roberto Exp $
 ** Standard library for string operations and pattern-matching
 ** See Copyright Notice in lua.h
 */
@@ -754,6 +754,7 @@ static void addintlen (char *form) {
 
 
 static int str_format (lua_State *L) {
+  int top = lua_gettop(L);
   int arg = 1;
   size_t sfl;
   const char *strfrmt = luaL_checklstring(L, arg, &sfl);
@@ -768,7 +769,8 @@ static int str_format (lua_State *L) {
     else { /* format item */
       char form[MAX_FORMAT];  /* to store the format (`%...') */
       char buff[MAX_ITEM];  /* to store the formatted item */
-      arg++;
+      if (++arg > top)
+        luaL_argerror(L, arg, "no value");
       strfrmt = scanformat(L, strfrmt, form);
       switch (*strfrmt++) {
         case 'c': {
@@ -785,11 +787,13 @@ static int str_format (lua_State *L) {
           snprintf(buff, MAX_ITEM, form, (unsigned LUA_INTFRM_T)luaL_checknumber(L, arg));
           break;
         }
+#if 0 /* ROCKLUA NO FLOATING POINT */
         case 'e':  case 'E': case 'f':
         case 'g': case 'G': {
           snprintf(buff, MAX_ITEM, form, (double)luaL_checknumber(L, arg));
           break;
         }
+#endif
         case 'q': {
           addquoted(L, &b, arg);
           continue;  /* skip the 'addsize' at the end */
diff --git a/apps/plugins/lua/lua.h b/apps/plugins/lua/lua.h
index a0c57dc60b..a4b73e743e 100644
--- a/apps/plugins/lua/lua.h
+++ b/apps/plugins/lua/lua.h
@@ -1,5 +1,5 @@
 /*
-** $Id$
+** $Id: lua.h,v 1.218.1.7 2012/01/13 20:36:20 roberto Exp $
 ** Lua - An Extensible Extension Language
 ** Lua.org, PUC-Rio, Brazil (http://www.lua.org)
 ** See Copyright Notice at the end of this file
@@ -17,9 +17,9 @@
 
 
 #define LUA_VERSION	"Lua 5.1"
-#define LUA_RELEASE	"Lua 5.1.4"
+#define LUA_RELEASE	"Lua 5.1.5"
 #define LUA_VERSION_NUM	501
-#define LUA_COPYRIGHT	"Copyright (C) 1994-2008 Lua.org, PUC-Rio"
+#define LUA_COPYRIGHT	"Copyright (C) 1994-2012 Lua.org, PUC-Rio"
 #define LUA_AUTHORS 	"R. Ierusalimschy, L. H. de Figueiredo & W. Celes"
 
 
@@ -362,7 +362,7 @@ struct lua_Debug {
 
 
 /******************************************************************************
-* Copyright (C) 1994-2008 Lua.org, PUC-Rio.  All rights reserved.
+* Copyright (C) 1994-2012 Lua.org, PUC-Rio.  All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
diff --git a/apps/plugins/lua/lvm.c b/apps/plugins/lua/lvm.c
index acce53a858..35a931d7a1 100644
--- a/apps/plugins/lua/lvm.c
+++ b/apps/plugins/lua/lvm.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lvm.c,v 2.63.1.3 2007/12/28 15:32:23 roberto Exp $
+** $Id: lvm.c,v 2.63.1.5 2011/08/17 20:43:11 roberto Exp $
 ** Lua virtual machine
 ** See Copyright Notice in lua.h
 */
@@ -133,6 +133,7 @@ void luaV_gettable (lua_State *L, const TValue *t, TValue *key, StkId val) {
 
 void luaV_settable (lua_State *L, const TValue *t, TValue *key, StkId val) {
   int loop;
+  TValue temp;
   for (loop = 0; loop < MAXTAGLOOP; loop++) {
     const TValue *tm;
     if (ttistable(t)) {  /* `t' is a table? */
@@ -141,6 +142,7 @@ void luaV_settable (lua_State *L, const TValue *t, TValue *key, StkId val) {
       if (!ttisnil(oldval) ||  /* result is no nil? */
           (tm = fasttm(L, h->metatable, TM_NEWINDEX)) == NULL) { /* or no TM? */
         setobj2t(L, oldval, val);
+        h->flags = 0;
         luaC_barriert(L, h, val);
         return;
       }
@@ -152,7 +154,9 @@ void luaV_settable (lua_State *L, const TValue *t, TValue *key, StkId val) {
       callTM(L, tm, t, key, val);
       return;
     }
-    t = tm;  /* else repeat with `tm' */ 
+    /* else repeat with `tm' */
+    setobj(L, &temp, tm);  /* avoid pointing inside table (may rehash) */
+    t = &temp;
   }
   luaG_runerror(L, "loop in settable");
 }
@@ -480,6 +484,7 @@ void luaV_execute (lua_State *L, int nexeccalls) {
         continue;
       }
       case OP_DIV: {
+        /* ROCKLUA INTEGER BUGFIX */
         TValue *rb = RKB(i);
         TValue *rc = RKC(i);
         if (ttisnumber(rb) && ttisnumber(rc)) {
@@ -495,6 +500,7 @@ void luaV_execute (lua_State *L, int nexeccalls) {
         continue;
       }
       case OP_MOD: {
+        /* ROCKLUA INTEGER BUGFIX */
         TValue *rb = RKB(i);
         TValue *rc = RKC(i);
         if (ttisnumber(rb) && ttisnumber(rc)) {
@@ -508,7 +514,7 @@ void luaV_execute (lua_State *L, int nexeccalls) {
           Protect(Arith(L, ra, rb, rc, TM_MOD));
 
         continue;
-    }
+      }
       case OP_POW: {
         arith_op(luai_numpow, TM_POW);
         continue;
diff --git a/apps/plugins/lua/rocklibc.h b/apps/plugins/lua/rocklibc.h
index fde50ae4f5..f119265e8e 100644
--- a/apps/plugins/lua/rocklibc.h
+++ b/apps/plugins/lua/rocklibc.h
@@ -42,6 +42,7 @@ extern int errno;
 /* Simple substitutions */
 #define memcmp rb->memcmp
 #define strlen rb->strlen
+#define strrchr rb->strrchr
 
 #endif /* _ROCKLIBC_H_ */