several configuration options that do not change often moved out of

luaconf.h and into more internal files

ldo.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ldo.c,v 2.75 2009/12/08 18:59:24 roberto Exp roberto $
+** $Id: ldo.c,v 2.76 2009/12/10 18:20:07 roberto Exp roberto $
 ** Stack and Call structure of Lua
 ** See Copyright Notice in lua.h
 */
@@ -40,6 +40,38 @@
 ** =======================================================
 */
 
+/*
+** LUAI_THROW/LUAI_TRY define how Lua does exception handling. By
+** default, Lua handles errors with exceptions when compiling as
+** C++ code, with _longjmp/_setjmp when asked to use them, and with
+** longjmp/setjmp otherwise.
+*/
+#if !defined(LUAI_THROW)
+
+#if defined(__cplusplus)
+/* C++ exceptions */
+#define LUAI_THROW(L,c)		throw(c)
+#define LUAI_TRY(L,c,a) \
+	try { a } catch(...) { if ((c)->status == 0) (c)->status = -1; }
+#define luai_jmpbuf		int  /* dummy variable */
+
+#elif defined(LUA_USE_ULONGJMP)
+/* in Unix, try _longjmp/_setjmp (more efficient) */
+#define LUAI_THROW(L,c)		_longjmp((c)->b, 1)
+#define LUAI_TRY(L,c,a)		if (_setjmp((c)->b) == 0) { a }
+#define luai_jmpbuf		jmp_buf
+
+#else
+/* default handling with long jumps */
+#define LUAI_THROW(L,c)		longjmp((c)->b, 1)
+#define LUAI_TRY(L,c,a)		if (setjmp((c)->b) == 0) { a }
+#define luai_jmpbuf		jmp_buf
+
+#endif
+
+#endif
+
+
 
 /* chain list of long jump buffers */
 struct lua_longjmp {

linit.c

@@ -1,5 +1,5 @@
 /*
-** $Id: linit.c,v 1.20 2009/09/05 12:39:29 roberto Exp roberto $
+** $Id: linit.c,v 1.21 2009/12/11 13:40:44 roberto Exp roberto $
 ** Initialization of libraries for lua.c and other clients        
 ** See Copyright Notice in lua.h
 */
@@ -63,7 +63,7 @@ LUALIB_API void luaL_openlibs (lua_State *L) {
     lua_setfield(L, -2, lib->name);
   }
   lua_pop(L, 1);  /* remove package.preload table */
-#ifdef LUA_COMPAT_DEBUGLIB
+#if defined(LUA_COMPAT_DEBUGLIB)
   lua_getfield(L, LUA_GLOBALSINDEX, "require");
   lua_pushliteral(L, LUA_DBLIBNAME);
   lua_call(L, 1, 0);  /* call 'require"debug"' */

llimits.h

@@ -1,5 +1,5 @@
 /*
-** $Id: llimits.h,v 1.74 2009/08/31 14:26:28 roberto Exp roberto $
+** $Id: llimits.h,v 1.75 2009/11/17 11:56:03 roberto Exp roberto $
 ** Limits, basic types, and some other `installation-dependent' definitions
 ** See Copyright Notice in lua.h
 */
@@ -44,6 +44,10 @@ typedef unsigned char lu_byte;
 
 
 /* type to ensure maximum alignment */
+#if !defined(LUAI_USER_ALIGNMENT_T)
+#define LUAI_USER_ALIGNMENT_T	union { double u; void *s; long l; }
+#endif
+
 typedef LUAI_USER_ALIGNMENT_T L_Umaxalign;
 
 
@@ -52,36 +56,47 @@ typedef LUAI_UACNUMBER l_uacNumber;
 
 
 /* internal assertions for in-house debugging */
-#ifdef lua_assert
-
+#if defined(lua_assert)
 #define check_exp(c,e)		(lua_assert(c), (e))
-#undef luai_apicheck
-#define luai_apicheck(L,e)	lua_assert(e)
-
 #else
-
 #define lua_assert(c)		((void)0)
 #define check_exp(c,e)		(e)
+#endif
 
+/*
+** assertion for checking API calls
+*/
+#if defined(LUA_USE_APICHECK)
+#include <assert.h>
+#define luai_apicheck(L,e)	{ (void)L; assert(e); }
+#elif !defined(luai_apicheck)
+#define luai_apicheck(L,e)	lua_assert(e)
 #endif
 
 #define api_check(l,e,msg)	luai_apicheck(l,(e) && msg)
 
 
-#ifndef UNUSED
+#if !defined(UNUSED)
 #define UNUSED(x)	((void)(x))	/* to avoid warnings */
 #endif
 
 
-#ifndef cast
 #define cast(t, exp)	((t)(exp))
-#endif
 
 #define cast_byte(i)	cast(lu_byte, (i))
 #define cast_num(i)	cast(lua_Number, (i))
 #define cast_int(i)	cast(int, (i))
 
 
+/*
+** maximum depth for nested C calls and syntactical nested non-terminals
+** in a program. (Value must fit in an unsigned short int.)
+*/
+#if !defined(LUAI_MAXCCALLS)
+#define LUAI_MAXCCALLS		200
+#endif
+
+
 
 /*
 ** type for virtual-machine instructions
@@ -97,23 +112,23 @@ typedef lu_int32 Instruction;
 
 
 /* minimum size for the string table (must be power of 2) */
-#ifndef MINSTRTABSIZE
+#if !defined(MINSTRTABSIZE)
 #define MINSTRTABSIZE	32
 #endif
 
 
 /* minimum size for string buffer */
-#ifndef LUA_MINBUFFER
+#if !defined(LUA_MINBUFFER)
 #define LUA_MINBUFFER	32
 #endif
 
 
-#ifndef lua_lock
+#if !defined(lua_lock)
 #define lua_lock(L)     ((void) 0)
 #define lua_unlock(L)   ((void) 0)
 #endif
 
-#ifndef luai_threadyield
+#if !defined(luai_threadyield)
 #define luai_threadyield(L)     {lua_unlock(L); lua_lock(L);}
 #endif
 
@@ -121,7 +136,7 @@ typedef lu_int32 Instruction;
 /*
 ** macro to control inclusion of some hard tests on stack reallocation
 */
-#ifndef HARDSTACKTESTS
+#if !defined(HARDSTACKTESTS)
 #define condmovestack(L)	((void)0)
 #else
 /* realloc stack keeping its size */

loadlib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: loadlib.c,v 1.67 2009/11/16 15:51:19 roberto Exp roberto $
+** $Id: loadlib.c,v 1.68 2009/11/24 12:05:44 roberto Exp roberto $
 ** Dynamic library loader for Lua
 ** See Copyright Notice in lua.h
 **
@@ -22,6 +22,43 @@
 #include "lualib.h"
 
 
+/*
+** LUA_PATH and LUA_CPATH are the names of the environment variables that
+** Lua check to set its paths.
+*/
+#if !defined(LUA_PATH)
+#define LUA_PATH	"LUA_PATH"
+#endif
+
+#if !defined(LUA_CPATH)
+#define LUA_CPATH	"LUA_CPATH"
+#endif
+
+
+/*
+** LUA_PATHSEP is the character that separates templates in a path.
+** LUA_PATH_MARK is the string that marks the substitution points in a
+** template.
+** LUA_EXECDIR in a Windows path is replaced by the executable's
+** directory.
+** LUA_IGMARK is a mark to ignore all before it when building the
+** luaopen_ function name.
+*/
+#if !defined (LUA_PATHSEP)
+#define LUA_PATHSEP		";"
+#endif
+#if !defined (LUA_PATH_MARK)
+#define LUA_PATH_MARK		"?"
+#endif
+#if !defined (LUA_EXECDIR)
+#define LUA_EXECDIR		"!"
+#endif
+#if !defined (LUA_IGMARK)
+#define LUA_IGMARK		"-"
+#endif
+
+
+
 /* prefix for open functions in C libraries */
 #define LUA_POF		"luaopen_"
 

loslib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: loslib.c,v 1.26 2009/11/23 18:20:38 roberto Exp roberto $
+** $Id: loslib.c,v 1.27 2009/11/24 12:05:44 roberto Exp roberto $
 ** Standard Operating System library
 ** See Copyright Notice in lua.h
 */
@@ -20,6 +20,28 @@
 #include "lualib.h"
 
 
+/*
+** By default, Lua uses tmpnam except when POSIX is available, where it
+** uses mkstemp.
+*/
+#if defined(LUA_USE_MKSTEMP)
+#include <unistd.h>
+#define LUA_TMPNAMBUFSIZE       32
+#define lua_tmpnam(b,e) { \
+        strcpy(b, "/tmp/lua_XXXXXX"); \
+        e = mkstemp(b); \
+        if (e != -1) close(e); \
+        e = (e == -1); }
+
+#elif !defined(lua_tmpnam)
+
+#define LUA_TMPNAMBUFSIZE       L_tmpnam
+#define lua_tmpnam(b,e)         { e = (tmpnam(b) == NULL); }
+
+#endif
+
+
+
 static int os_pushresult (lua_State *L, int i, const char *filename) {
   int en = errno;  /* calls to Lua API may change this value */
   if (i) {

lstate.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lstate.c,v 2.65 2009/12/14 15:27:30 roberto Exp roberto $
+** $Id: lstate.c,v 2.66 2009/12/16 16:42:58 roberto Exp roberto $
 ** Global State
 ** See Copyright Notice in lua.h
 */
@@ -25,6 +25,15 @@
 #include "ltm.h"
 
 
+#if !defined(LUAI_GCPAUSE)
+#define LUAI_GCPAUSE	162  /* 162% (wait memory to double before next GC) */
+#endif
+
+#if !defined(LUAI_GCMUL)
+#define LUAI_GCMUL	200 /* GC runs 'twice the speed' of memory allocation */
+#endif
+
+
 /*
 ** thread state + extra space
 */

lstrlib.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lstrlib.c,v 1.144 2009/11/24 12:05:44 roberto Exp roberto $
+** $Id: lstrlib.c,v 1.145 2009/11/26 16:49:28 roberto Exp roberto $
 ** Standard library for string operations and pattern-matching
 ** See Copyright Notice in lua.h
 */
@@ -20,6 +20,15 @@
 #include "lualib.h"
 
 
+/*
+** maximum number of captures that a pattern can do during
+** pattern-matching. This limit is arbitrary.
+*/
+#if !defined(LUA_MAXCAPTURES)
+#define LUA_MAXCAPTURES		32
+#endif
+
+
 /* macro to `unsign' a character */
 #define uchar(c)        ((unsigned char)(c))
 

ltests.h

@@ -1,5 +1,5 @@
 /*
-** $Id: ltests.h,v 2.27 2009/12/14 15:27:30 roberto Exp roberto $
+** $Id: ltests.h,v 2.28 2009/12/16 16:42:58 roberto Exp roberto $
 ** Internal Header for Debugging of the Lua Implementation
 ** See Copyright Notice in lua.h
 */
@@ -44,10 +44,6 @@ void *l_Trick;
 
 void *debug_realloc (void *ud, void *block, size_t osize, size_t nsize);
 
-#ifdef lua_c
-#define luaL_newstate()	lua_newstate(debug_realloc, &l_memcontrol)
-#endif
-
 
 typedef struct CallInfo *pCallInfo;
 
@@ -72,7 +68,9 @@ struct L_EXTRA { int lock; int *plock; };
 
 int luaB_opentests (lua_State *L);
 
-#ifdef lua_c
+
+#if defined(lua_c)
+#define luaL_newstate()		lua_newstate(debug_realloc, &l_memcontrol)
 #define luaL_openlibs(L)	{ (luaL_openlibs)(L); luaB_opentests(L); }
 #endif
 

lua.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lua.c,v 1.176 2009/11/24 18:05:12 roberto Exp roberto $
+** $Id: lua.c,v 1.177 2009/12/11 13:40:44 roberto Exp roberto $
 ** Lua stand-alone interpreter
 ** See Copyright Notice in lua.h
 */
@@ -18,6 +18,69 @@
 #include "lualib.h"
 
 
+#if !defined(LUA_PROMPT)
+#define LUA_PROMPT		"> "
+#define LUA_PROMPT2		">> "
+#endif
+
+#if !defined(LUA_PROGNAME)
+#define LUA_PROGNAME		"lua"
+#endif
+
+#if !defined(LUA_MAXINPUT)
+#define LUA_MAXINPUT		512
+#endif
+
+#if !defined(LUA_INIT)
+#define LUA_INIT		"LUA_INIT"
+#endif
+
+
+/*
+** lua_stdin_is_tty detects whether the standard input is a 'tty' (that
+** is, whether we're running lua interactively).
+*/
+#if defined(LUA_USE_ISATTY)
+#include <unistd.h>
+#define lua_stdin_is_tty()      isatty(0)
+#elif defined(LUA_WIN)
+#include <io.h>
+#include <stdio.h>
+#define lua_stdin_is_tty()      _isatty(_fileno(stdin))
+#else
+#define lua_stdin_is_tty()      1  /* assume stdin is a tty */
+#endif
+
+
+/*
+** lua_readline defines how to show a prompt and then read a line from
+** the standard input.
+** lua_saveline defines how to "save" a read line in a "history".
+** lua_freeline defines how to free a line read by lua_readline.
+*/
+#if defined(LUA_USE_READLINE)
+
+#include <stdio.h>
+#include <readline/readline.h>
+#include <readline/history.h>
+#define lua_readline(L,b,p)     ((void)L, ((b)=readline(p)) != NULL)
+#define lua_saveline(L,idx) \
+        if (lua_objlen(L,idx) > 0)  /* non-empty line? */ \
+          add_history(lua_tostring(L, idx));  /* add it to history */
+#define lua_freeline(L,b)       ((void)L, free(b))
+
+#elif !defined(lua_readline)
+
+#define lua_readline(L,b,p)     \
+        ((void)L, fputs(p, stdout), fflush(stdout),  /* show prompt */ \
+        fgets(b, LUA_MAXINPUT, stdin) != NULL)  /* get line */
+#define lua_saveline(L,idx)     { (void)L; (void)idx; }
+#define lua_freeline(L,b)       { (void)L; (void)b; }
+
+#endif
+
+
+
 
 static lua_State *globalL = NULL;
 

luaconf.h

@@ -1,5 +1,5 @@
 /*
-** $Id: luaconf.h,v 1.120 2009/12/10 19:00:33 roberto Exp roberto $
+** $Id: luaconf.h,v 1.121 2009/12/14 15:27:30 roberto Exp roberto $
 ** Configuration file for Lua
 ** See Copyright Notice in lua.h
 */
@@ -65,17 +65,6 @@
 #endif
 
 
-/*
-@@ LUA_PATH and LUA_CPATH are the names of the environment variables that
-@* Lua check to set its paths.
-@@ LUA_INIT is the name of the environment variable that Lua
-@* checks for initialization code.
-** CHANGE them if you want different names.
-*/
-#define LUA_PATH        "LUA_PATH"
-#define LUA_CPATH       "LUA_CPATH"
-#define LUA_INIT	"LUA_INIT"
-
 
 /*
 @@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
@@ -123,24 +112,6 @@
 #endif
 
 
-/*
-@@ LUA_PATHSEP is the character that separates templates in a path.
-@@ LUA_PATH_MARK is the string that marks the substitution points in a
-@* template.
-@@ LUA_EXECDIR in a Windows path is replaced by the executable's
-@* directory.
-@@ LUA_IGMARK is a mark to ignore all before it when building the
-@* luaopen_ function name.
-** CHANGE them if for some reason your system cannot use those
-** characters. (E.g., if one of those characters is a common character
-** in file/directory names.) Probably you do not need to change them.
-*/
-#define LUA_PATHSEP	";"
-#define LUA_PATH_MARK	"?"
-#define LUA_EXECDIR	"!"
-#define LUA_IGMARK	"-"
-
-
 /*
 @@ LUA_API is a mark for all core API functions.
 @@ LUALIB_API is a mark for all auxiliary library functions.
@@ -225,106 +196,6 @@
 #define luai_writestring(s,l)	fwrite((s), sizeof(char), (l), stdout)
 
 
-/*
-** {==================================================================
-** Stand-alone configuration
-** ===================================================================
-*/
-
-#if defined(lua_c) || defined(luaall_c)
-
-/*
-@@ lua_stdin_is_tty detects whether the standard input is a 'tty' (that
-@* is, whether we're running lua interactively).
-** CHANGE it if you have a better definition for non-POSIX/non-Windows
-** systems.
-*/
-#if defined(LUA_USE_ISATTY)
-#include <unistd.h>
-#define lua_stdin_is_tty()	isatty(0)
-#elif defined(LUA_WIN)
-#include <io.h>
-#include <stdio.h>
-#define lua_stdin_is_tty()	_isatty(_fileno(stdin))
-#else
-#define lua_stdin_is_tty()	1  /* assume stdin is a tty */
-#endif
-
-
-/*
-@@ LUA_PROMPT is the default prompt used by stand-alone Lua.
-@@ LUA_PROMPT2 is the default continuation prompt used by stand-alone Lua.
-** CHANGE them if you want different prompts. (You can also change the
-** prompts dynamically, assigning to globals _PROMPT/_PROMPT2.)
-*/
-#define LUA_PROMPT		"> "
-#define LUA_PROMPT2		">> "
-
-
-/*
-@@ LUA_PROGNAME is the default name for the stand-alone Lua program.
-** CHANGE it if your stand-alone interpreter has a different name and
-** your system is not able to detect that name automatically.
-*/
-#define LUA_PROGNAME		"lua"
-
-
-/*
-@@ LUA_MAXINPUT is the maximum length for an input line in the
-@* stand-alone interpreter.
-** CHANGE it if you need longer lines.
-*/
-#define LUA_MAXINPUT	512
-
-
-/*
-@@ lua_readline defines how to show a prompt and then read a line from
-@* the standard input.
-@@ lua_saveline defines how to "save" a read line in a "history".
-@@ lua_freeline defines how to free a line read by lua_readline.
-** CHANGE them if you want to improve/adapt this functionality.
-*/
-#if defined(LUA_USE_READLINE)
-#include <stdio.h>
-#include <readline/readline.h>
-#include <readline/history.h>
-#define lua_readline(L,b,p)	((void)L, ((b)=readline(p)) != NULL)
-#define lua_saveline(L,idx) \
-	if (lua_objlen(L,idx) > 0)  /* non-empty line? */ \
-	  add_history(lua_tostring(L, idx));  /* add it to history */
-#define lua_freeline(L,b)	((void)L, free(b))
-#else
-#define lua_readline(L,b,p)	\
-	((void)L, fputs(p, stdout), fflush(stdout),  /* show prompt */ \
-	fgets(b, LUA_MAXINPUT, stdin) != NULL)  /* get line */
-#define lua_saveline(L,idx)	{ (void)L; (void)idx; }
-#define lua_freeline(L,b)	{ (void)L; (void)b; }
-#endif
-
-#endif
-
-/* }================================================================== */
-
-
-/*
-@@ LUAI_GCPAUSE defines the default pause between garbage-collector cycles
-@* as a percentage.
-** CHANGE it if you want the GC to run faster or slower (higher values
-** mean larger pauses which mean slower collection.) You can also change
-** this value dynamically.
-*/
-#define LUAI_GCPAUSE	162  /* 162% (wait memory to double before next GC) */
-
-
-/*
-@@ LUAI_GCMUL defines the default speed of garbage collection relative to
-@* memory allocation as a percentage.
-** CHANGE it if you want to change the granularity of the garbage
-** collection. (Higher values mean coarser collections. 0 represents
-** infinity, where each step performs a full collection.) You can also
-** change this value dynamically.
-*/
-#define LUAI_GCMUL	200 /* GC runs 'twice the speed' of memory allocation */
 
 
 
@@ -373,22 +244,6 @@
 
 
 
-
-/*
-@@ luai_apicheck is the assert macro used by the Lua-C API.
-** CHANGE luai_apicheck if you want Lua to perform some checks in the
-** parameters it gets from API calls. This may slow down the interpreter
-** a bit, but may be quite useful when debugging C code that interfaces
-** with Lua. A useful redefinition is to use assert.h.
-*/
-#if defined(LUA_USE_APICHECK)
-#include <assert.h>
-#define luai_apicheck(L,o)	{ (void)L; assert(o); }
-#else
-#define luai_apicheck(L,o)	{ (void)L; }
-#endif
-
-
 /*
 @@ LUAI_BITSINT defines the number of bits in an int.
 ** CHANGE here if Lua cannot automatically detect the number of bits of
@@ -458,14 +313,6 @@
 */
 
 
-/*
-@@ LUAI_MAXCCALLS is the maximum depth for nested C calls and
-@* syntactical nested non-terminals in a program. (Value must
-@* fit in an unsigned short int.)
-*/
-#define LUAI_MAXCCALLS		200
-
-
 /*
 @@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system.
 */
@@ -615,81 +462,6 @@ union luai_Cast { double l_d; long l_l; };
 /* }================================================================== */
 
 
-/*
-@@ LUAI_USER_ALIGNMENT_T is a type that requires maximum alignment.
-** CHANGE it if your system requires alignments larger than double. (For
-** instance, if your system supports long doubles and they must be
-** aligned in 16-byte boundaries, then you should add long double in the
-** union.) Probably you do not need to change this.
-*/
-#define LUAI_USER_ALIGNMENT_T	union { double u; void *s; long l; }
-
-
-/*
-@@ LUAI_THROW/LUAI_TRY define how Lua does exception handling.
-** CHANGE them if you prefer to use longjmp/setjmp even with C++
-** or if want/don't to use _longjmp/_setjmp instead of regular
-** longjmp/setjmp. By default, Lua handles errors with exceptions when
-** compiling as C++ code, with _longjmp/_setjmp when asked to use them,
-** and with longjmp/setjmp otherwise.
-*/
-#if defined(__cplusplus)
-/* C++ exceptions */
-#define LUAI_THROW(L,c)	throw(c)
-#define LUAI_TRY(L,c,a)	try { a } catch(...) \
-	{ if ((c)->status == 0) (c)->status = -1; }
-#define luai_jmpbuf	int  /* dummy variable */
-
-#elif defined(LUA_USE_ULONGJMP)
-/* in Unix, try _longjmp/_setjmp (more efficient) */
-#define LUAI_THROW(L,c)	_longjmp((c)->b, 1)
-#define LUAI_TRY(L,c,a)	if (_setjmp((c)->b) == 0) { a }
-#define luai_jmpbuf	jmp_buf
-
-#else
-/* default handling with long jumps */
-#define LUAI_THROW(L,c)	longjmp((c)->b, 1)
-#define LUAI_TRY(L,c,a)	if (setjmp((c)->b) == 0) { a }
-#define luai_jmpbuf	jmp_buf
-
-#endif
-
-
-/*
-@@ LUA_MAXCAPTURES is the maximum number of captures that a pattern
-@* can do during pattern-matching.
-** CHANGE it if you need more captures. This limit is arbitrary.
-*/
-#define LUA_MAXCAPTURES		32
-
-
-/*
-@@ lua_tmpnam is the function that the OS library uses to create a
-@* temporary name.
-@@ LUA_TMPNAMBUFSIZE is the maximum size of a name created by lua_tmpnam.
-** CHANGE them if you have an alternative to tmpnam (which is considered
-** insecure) or if you want the original tmpnam anyway.  By default, Lua
-** uses tmpnam except when POSIX is available, where it uses mkstemp.
-*/
-#if defined(loslib_c) || defined(luaall_c)
-
-#if defined(LUA_USE_MKSTEMP)
-#include <unistd.h>
-#define LUA_TMPNAMBUFSIZE	32
-#define lua_tmpnam(b,e)	{ \
-	strcpy(b, "/tmp/lua_XXXXXX"); \
-	e = mkstemp(b); \
-	if (e != -1) close(e); \
-	e = (e == -1); }
-
-#else
-#define LUA_TMPNAMBUFSIZE	L_tmpnam
-#define lua_tmpnam(b,e)		{ e = (tmpnam(b) == NULL); }
-#endif
-
-#endif
-
-
 /*
 @@ LUA_STRFTIMEOPTIONS is the list of valid conversion specifiers
 @* for the 'strftime' function;
@@ -752,15 +524,6 @@ union luai_Cast { double l_d; long l_l; };
 #endif
 
 
-/*
-@@ LUAI_EXTRASPACE allows you to add user-specific data in a lua_State.
-@* (This data goes just *before* the lua_State pointer.)
-** CHANGE (define) this if you really need that. If defined, this value
-** cannot be zero.
-*/
-/* #define LUAI_EXTRASPACE		?? */
-
-
 /*
 @@ luai_userstate* allow user-specific actions on threads.
 ** CHANGE them if you defined LUAI_EXTRASPACE and need to do something