From c467671ae8b6ec161c17e86f3383fd0625f755b8 Mon Sep 17 00:00:00 2001
From: Clyne Sullivan <clyne@bitgloo.com>
Date: Fri, 19 Aug 2022 19:48:10 -0400
Subject: remove sol2 (will re-add as submodule)

---
 lib/sol2/include/sol/compatibility/compat-5.3.c.h | 890 ----------------------
 1 file changed, 890 deletions(-)
 delete mode 100644 lib/sol2/include/sol/compatibility/compat-5.3.c.h

(limited to 'lib/sol2/include/sol/compatibility/compat-5.3.c.h')

diff --git a/lib/sol2/include/sol/compatibility/compat-5.3.c.h b/lib/sol2/include/sol/compatibility/compat-5.3.c.h
deleted file mode 100644
index 94c0e96..0000000
--- a/lib/sol2/include/sol/compatibility/compat-5.3.c.h
+++ /dev/null
@@ -1,890 +0,0 @@
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#include <errno.h>
-#include <stdio.h>
-#include "compat-5.3.h"
-
-/* don't compile it again if it already is included via compat53.h */
-#ifndef KEPLER_PROJECT_COMPAT53_C_
-#define KEPLER_PROJECT_COMPAT53_C_
-
-
-
-/* definitions for Lua 5.1 only */
-#if defined(LUA_VERSION_NUM) && LUA_VERSION_NUM == 501
-
-#ifndef COMPAT53_FOPEN_NO_LOCK
-#  if defined(_MSC_VER)
-#    define COMPAT53_FOPEN_NO_LOCK 1
-#  else /* otherwise */
-#    define COMPAT53_FOPEN_NO_LOCK 0
-#  endif /* VC++ only so far */
-#endif /* No-lock fopen_s usage if possible */
-
-#if defined(_MSC_VER) && COMPAT53_FOPEN_NO_LOCK
-#  include <share.h>
-#endif /* VC++ _fsopen for share-allowed file read */
-
-#ifndef COMPAT53_HAVE_STRERROR_R
-#  if defined(__GLIBC__) || defined(_POSIX_VERSION) || defined(__APPLE__) || \
-      (!defined (__MINGW32__) && defined(__GNUC__) && (__GNUC__ < 6))
-#    define COMPAT53_HAVE_STRERROR_R 1
-#  else /* none of the defines matched: define to 0 */
-#    define COMPAT53_HAVE_STRERROR_R 0
-#  endif /* have strerror_r of some form */
-#endif /* strerror_r */
-
-#ifndef COMPAT53_HAVE_STRERROR_S
-#  if defined(_MSC_VER) || (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) || \
-      (defined(__STDC_LIB_EXT1__) && __STDC_LIB_EXT1__)
-#    define COMPAT53_HAVE_STRERROR_S 1
-#  else /* not VC++ or C11 */
-#    define COMPAT53_HAVE_STRERROR_S 0
-#  endif /* strerror_s from VC++ or C11 */
-#endif /* strerror_s */
-
-#ifndef COMPAT53_LUA_FILE_BUFFER_SIZE
-#  define COMPAT53_LUA_FILE_BUFFER_SIZE 4096
-#endif /* Lua File Buffer Size */
-
-
-static char* compat53_strerror(int en, char* buff, size_t sz) {
-#if COMPAT53_HAVE_STRERROR_R
-	/* use strerror_r here, because it's available on these specific platforms */
-	if (sz > 0) {
-		buff[0] = '\0';
-		/* we don't care whether the GNU version or the XSI version is used: */
-		if (strerror_r(en, buff, sz)) {
-			/* Yes, we really DO want to ignore the return value!
-			* GCC makes that extra hard, not even a (void) cast will do. */
-		}
-		if (buff[0] == '\0') {
-			/* Buffer is unchanged, so we probably have called GNU strerror_r which
-			* returned a static constant string. Chances are that strerror will
-			* return the same static constant string and therefore be thread-safe. */
-			return strerror(en);
-		}
-	}
-	return buff; /* sz is 0 *or* strerror_r wrote into the buffer */
-#elif COMPAT53_HAVE_STRERROR_S
-	/* for MSVC and other C11 implementations, use strerror_s since it's
-	* provided by default by the libraries */
-	strerror_s(buff, sz, en);
-	return buff;
-#else
-	/* fallback, but strerror is not guaranteed to be threadsafe due to modifying
-	* errno itself and some impls not locking a static buffer for it ... but most
-	* known systems have threadsafe errno: this might only change if the locale
-	* is changed out from under someone while this function is being called */
-	(void)buff;
-	(void)sz;
-	return strerror(en);
-#endif
-}
-
-
-COMPAT53_API int lua_absindex(lua_State *L, int i) {
-	if (i < 0 && i > LUA_REGISTRYINDEX)
-		i += lua_gettop(L) + 1;
-	return i;
-}
-
-
-static void compat53_call_lua(lua_State *L, char const code[], size_t len,
-	int nargs, int nret) {
-	lua_rawgetp(L, LUA_REGISTRYINDEX, (void*)code);
-	if (lua_type(L, -1) != LUA_TFUNCTION) {
-		lua_pop(L, 1);
-		if (luaL_loadbuffer(L, code, len, "=none"))
-			lua_error(L);
-		lua_pushvalue(L, -1);
-		lua_rawsetp(L, LUA_REGISTRYINDEX, (void*)code);
-	}
-	lua_insert(L, -nargs - 1);
-	lua_call(L, nargs, nret);
-}
-
-
-static const char compat53_arith_code[] =
-"local op,a,b=...\n"
-"if op==0 then return a+b\n"
-"elseif op==1 then return a-b\n"
-"elseif op==2 then return a*b\n"
-"elseif op==3 then return a/b\n"
-"elseif op==4 then return a%b\n"
-"elseif op==5 then return a^b\n"
-"elseif op==6 then return -a\n"
-"end\n";
-
-COMPAT53_API void lua_arith(lua_State *L, int op) {
-	if (op < LUA_OPADD || op > LUA_OPUNM)
-		luaL_error(L, "invalid 'op' argument for lua_arith");
-	luaL_checkstack(L, 5, "not enough stack slots");
-	if (op == LUA_OPUNM)
-		lua_pushvalue(L, -1);
-	lua_pushnumber(L, op);
-	lua_insert(L, -3);
-	compat53_call_lua(L, compat53_arith_code,
-		sizeof(compat53_arith_code) - 1, 3, 1);
-}
-
-
-static const char compat53_compare_code[] =
-"local a,b=...\n"
-"return a<=b\n";
-
-COMPAT53_API int lua_compare(lua_State *L, int idx1, int idx2, int op) {
-	int result = 0;
-	switch (op) {
-	case LUA_OPEQ:
-		return lua_equal(L, idx1, idx2);
-	case LUA_OPLT:
-		return lua_lessthan(L, idx1, idx2);
-	case LUA_OPLE:
-		luaL_checkstack(L, 5, "not enough stack slots");
-		idx1 = lua_absindex(L, idx1);
-		idx2 = lua_absindex(L, idx2);
-		lua_pushvalue(L, idx1);
-		lua_pushvalue(L, idx2);
-		compat53_call_lua(L, compat53_compare_code,
-			sizeof(compat53_compare_code) - 1, 2, 1);
-		result = lua_toboolean(L, -1);
-		lua_pop(L, 1);
-		return result;
-	default:
-		luaL_error(L, "invalid 'op' argument for lua_compare");
-	}
-	return 0;
-}
-
-
-COMPAT53_API void lua_copy(lua_State *L, int from, int to) {
-	int abs_to = lua_absindex(L, to);
-	luaL_checkstack(L, 1, "not enough stack slots");
-	lua_pushvalue(L, from);
-	lua_replace(L, abs_to);
-}
-
-
-COMPAT53_API void lua_len(lua_State *L, int i) {
-	switch (lua_type(L, i)) {
-	case LUA_TSTRING:
-		lua_pushnumber(L, (lua_Number)lua_objlen(L, i));
-		break;
-	case LUA_TTABLE:
-		if (!luaL_callmeta(L, i, "__len"))
-			lua_pushnumber(L, (lua_Number)lua_objlen(L, i));
-		break;
-	case LUA_TUSERDATA:
-		if (luaL_callmeta(L, i, "__len"))
-			break;
-		/* FALLTHROUGH */
-	default:
-		luaL_error(L, "attempt to get length of a %s value",
-			lua_typename(L, lua_type(L, i)));
-	}
-}
-
-
-COMPAT53_API int lua_rawgetp(lua_State *L, int i, const void *p) {
-	int abs_i = lua_absindex(L, i);
-	lua_pushlightuserdata(L, (void*)p);
-	lua_rawget(L, abs_i);
-	return lua_type(L, -1);
-}
-
-COMPAT53_API void lua_rawsetp(lua_State *L, int i, const void *p) {
-	int abs_i = lua_absindex(L, i);
-	luaL_checkstack(L, 1, "not enough stack slots");
-	lua_pushlightuserdata(L, (void*)p);
-	lua_insert(L, -2);
-	lua_rawset(L, abs_i);
-}
-
-
-COMPAT53_API lua_Number lua_tonumberx(lua_State *L, int i, int *isnum) {
-	lua_Number n = lua_tonumber(L, i);
-	if (isnum != NULL) {
-		*isnum = (n != 0 || lua_isnumber(L, i));
-	}
-	return n;
-}
-
-
-COMPAT53_API void luaL_checkversion(lua_State *L) {
-	(void)L;
-}
-
-
-COMPAT53_API void luaL_checkstack(lua_State *L, int sp, const char *msg) {
-	if (!lua_checkstack(L, sp + LUA_MINSTACK)) {
-		if (msg != NULL)
-			luaL_error(L, "stack overflow (%s)", msg);
-		else {
-			lua_pushliteral(L, "stack overflow");
-			lua_error(L);
-		}
-	}
-}
-
-
-COMPAT53_API int luaL_getsubtable(lua_State *L, int i, const char *name) {
-	int abs_i = lua_absindex(L, i);
-	luaL_checkstack(L, 3, "not enough stack slots");
-	lua_pushstring(L, name);
-	lua_gettable(L, abs_i);
-	if (lua_istable(L, -1))
-		return 1;
-	lua_pop(L, 1);
-	lua_newtable(L);
-	lua_pushstring(L, name);
-	lua_pushvalue(L, -2);
-	lua_settable(L, abs_i);
-	return 0;
-}
-
-
-COMPAT53_API lua_Integer luaL_len(lua_State *L, int i) {
-	lua_Integer res = 0;
-	int isnum = 0;
-	luaL_checkstack(L, 1, "not enough stack slots");
-	lua_len(L, i);
-	res = lua_tointegerx(L, -1, &isnum);
-	lua_pop(L, 1);
-	if (!isnum)
-		luaL_error(L, "object length is not an integer");
-	return res;
-}
-
-
-COMPAT53_API void luaL_setfuncs(lua_State *L, const luaL_Reg *l, int nup) {
-	luaL_checkstack(L, nup + 1, "too many upvalues");
-	for (; l->name != NULL; l++) {  /* fill the table with given functions */
-		int i;
-		lua_pushstring(L, l->name);
-		for (i = 0; i < nup; i++)  /* copy upvalues to the top */
-			lua_pushvalue(L, -(nup + 1));
-		lua_pushcclosure(L, l->func, nup);  /* closure with those upvalues */
-		lua_settable(L, -(nup + 3)); /* table must be below the upvalues, the name and the closure */
-	}
-	lua_pop(L, nup);  /* remove upvalues */
-}
-
-
-COMPAT53_API void luaL_setmetatable(lua_State *L, const char *tname) {
-	luaL_checkstack(L, 1, "not enough stack slots");
-	luaL_getmetatable(L, tname);
-	lua_setmetatable(L, -2);
-}
-
-
-COMPAT53_API void *luaL_testudata(lua_State *L, int i, const char *tname) {
-	void *p = lua_touserdata(L, i);
-	luaL_checkstack(L, 2, "not enough stack slots");
-	if (p == NULL || !lua_getmetatable(L, i))
-		return NULL;
-	else {
-		int res = 0;
-		luaL_getmetatable(L, tname);
-		res = lua_rawequal(L, -1, -2);
-		lua_pop(L, 2);
-		if (!res)
-			p = NULL;
-	}
-	return p;
-}
-
-
-static int compat53_countlevels(lua_State *L) {
-	lua_Debug ar;
-	int li = 1, le = 1;
-	/* find an upper bound */
-	while (lua_getstack(L, le, &ar)) { li = le; le *= 2; }
-	/* do a binary search */
-	while (li < le) {
-		int m = (li + le) / 2;
-		if (lua_getstack(L, m, &ar)) li = m + 1;
-		else le = m;
-	}
-	return le - 1;
-}
-
-static int compat53_findfield(lua_State *L, int objidx, int level) {
-	if (level == 0 || !lua_istable(L, -1))
-		return 0;  /* not found */
-	lua_pushnil(L);  /* start 'next' loop */
-	while (lua_next(L, -2)) {  /* for each pair in table */
-		if (lua_type(L, -2) == LUA_TSTRING) {  /* ignore non-string keys */
-			if (lua_rawequal(L, objidx, -1)) {  /* found object? */
-				lua_pop(L, 1);  /* remove value (but keep name) */
-				return 1;
-			}
-			else if (compat53_findfield(L, objidx, level - 1)) {  /* try recursively */
-				lua_remove(L, -2);  /* remove table (but keep name) */
-				lua_pushliteral(L, ".");
-				lua_insert(L, -2);  /* place '.' between the two names */
-				lua_concat(L, 3);
-				return 1;
-			}
-		}
-		lua_pop(L, 1);  /* remove value */
-	}
-	return 0;  /* not found */
-}
-
-static int compat53_pushglobalfuncname(lua_State *L, lua_Debug *ar) {
-	int top = lua_gettop(L);
-	lua_getinfo(L, "f", ar);  /* push function */
-	lua_pushvalue(L, LUA_GLOBALSINDEX);
-	if (compat53_findfield(L, top + 1, 2)) {
-		lua_copy(L, -1, top + 1);  /* move name to proper place */
-		lua_pop(L, 2);  /* remove pushed values */
-		return 1;
-	}
-	else {
-		lua_settop(L, top);  /* remove function and global table */
-		return 0;
-	}
-}
-
-static void compat53_pushfuncname(lua_State *L, lua_Debug *ar) {
-	if (*ar->namewhat != '\0')  /* is there a name? */
-		lua_pushfstring(L, "function " LUA_QS, ar->name);
-	else if (*ar->what == 'm')  /* main? */
-		lua_pushliteral(L, "main chunk");
-	else if (*ar->what == 'C') {
-		if (compat53_pushglobalfuncname(L, ar)) {
-			lua_pushfstring(L, "function " LUA_QS, lua_tostring(L, -1));
-			lua_remove(L, -2);  /* remove name */
-		}
-		else
-			lua_pushliteral(L, "?");
-	}
-	else
-		lua_pushfstring(L, "function <%s:%d>", ar->short_src, ar->linedefined);
-}
-
-#define COMPAT53_LEVELS1 12  /* size of the first part of the stack */
-#define COMPAT53_LEVELS2 10  /* size of the second part of the stack */
-
-COMPAT53_API void luaL_traceback(lua_State *L, lua_State *L1,
-	const char *msg, int level) {
-	lua_Debug ar;
-	int top = lua_gettop(L);
-	int numlevels = compat53_countlevels(L1);
-	int mark = (numlevels > COMPAT53_LEVELS1 + COMPAT53_LEVELS2) ? COMPAT53_LEVELS1 : 0;
-	if (msg) lua_pushfstring(L, "%s\n", msg);
-	lua_pushliteral(L, "stack traceback:");
-	while (lua_getstack(L1, level++, &ar)) {
-		if (level == mark) {  /* too many levels? */
-			lua_pushliteral(L, "\n\t...");  /* add a '...' */
-			level = numlevels - COMPAT53_LEVELS2;  /* and skip to last ones */
-		}
-		else {
-			lua_getinfo(L1, "Slnt", &ar);
-			lua_pushfstring(L, "\n\t%s:", ar.short_src);
-			if (ar.currentline > 0)
-				lua_pushfstring(L, "%d:", ar.currentline);
-			lua_pushliteral(L, " in ");
-			compat53_pushfuncname(L, &ar);
-			lua_concat(L, lua_gettop(L) - top);
-		}
-	}
-	lua_concat(L, lua_gettop(L) - top);
-}
-
-
-COMPAT53_API int luaL_fileresult(lua_State *L, int stat, const char *fname) {
-	const char *serr = NULL;
-	int en = errno;  /* calls to Lua API may change this value */
-	char buf[512] = { 0 };
-	if (stat) {
-		lua_pushboolean(L, 1);
-		return 1;
-	}
-	else {
-		lua_pushnil(L);
-		serr = compat53_strerror(en, buf, sizeof(buf));
-		if (fname)
-			lua_pushfstring(L, "%s: %s", fname, serr);
-		else
-			lua_pushstring(L, serr);
-		lua_pushnumber(L, (lua_Number)en);
-		return 3;
-	}
-}
-
-
-static int compat53_checkmode(lua_State *L, const char *mode, const char *modename, int err) {
-	if (mode && strchr(mode, modename[0]) == NULL) {
-		lua_pushfstring(L, "attempt to load a %s chunk (mode is '%s')", modename, mode);
-		return err;
-	}
-	return LUA_OK;
-}
-
-
-typedef struct {
-	lua_Reader reader;
-	void *ud;
-	int has_peeked_data;
-	const char *peeked_data;
-	size_t peeked_data_size;
-} compat53_reader_data;
-
-
-static const char *compat53_reader(lua_State *L, void *ud, size_t *size) {
-	compat53_reader_data *data = (compat53_reader_data *)ud;
-	if (data->has_peeked_data) {
-		data->has_peeked_data = 0;
-		*size = data->peeked_data_size;
-		return data->peeked_data;
-	}
-	else
-		return data->reader(L, data->ud, size);
-}
-
-
-COMPAT53_API int lua_load(lua_State *L, lua_Reader reader, void *data, const char *source, const char *mode) {
-	int status = LUA_OK;
-	compat53_reader_data compat53_data = { reader, data, 1, 0, 0 };
-	compat53_data.peeked_data = reader(L, data, &(compat53_data.peeked_data_size));
-	if (compat53_data.peeked_data && compat53_data.peeked_data_size &&
-		compat53_data.peeked_data[0] == LUA_SIGNATURE[0]) /* binary file? */
-		status = compat53_checkmode(L, mode, "binary", LUA_ERRSYNTAX);
-	else
-		status = compat53_checkmode(L, mode, "text", LUA_ERRSYNTAX);
-	if (status != LUA_OK)
-		return status;
-	/* we need to call the original 5.1 version of lua_load! */
-#undef lua_load
-	return lua_load(L, compat53_reader, &compat53_data, source);
-#define lua_load COMPAT53_CONCAT(COMPAT53_PREFIX, _load_53)
-}
-
-
-typedef struct {
-	int n;  /* number of pre-read characters */
-	FILE *f;  /* file being read */
-	char buff[COMPAT53_LUA_FILE_BUFFER_SIZE];  /* area for reading file */
-} compat53_LoadF;
-
-
-static const char *compat53_getF(lua_State *L, void *ud, size_t *size) {
-	compat53_LoadF *lf = (compat53_LoadF *)ud;
-	(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 */
-	}
-	else {  /* read a block from file */
-		   /* 'fread' can return > 0 *and* set the EOF flag. If next call to
-		   'compat53_getF' called 'fread', it might still wait for user input.
-		   The next check avoids this problem. */
-		if (feof(lf->f)) return NULL;
-		*size = fread(lf->buff, 1, sizeof(lf->buff), lf->f);  /* read block */
-	}
-	return lf->buff;
-}
-
-
-static int compat53_errfile(lua_State *L, const char *what, int fnameindex) {
-	char buf[512] = { 0 };
-	const char *serr = compat53_strerror(errno, buf, sizeof(buf));
-	const char *filename = lua_tostring(L, fnameindex) + 1;
-	lua_pushfstring(L, "cannot %s %s: %s", what, filename, serr);
-	lua_remove(L, fnameindex);
-	return LUA_ERRFILE;
-}
-
-
-static int compat53_skipBOM(compat53_LoadF *lf) {
-	const char *p = "\xEF\xBB\xBF";  /* UTF-8 BOM mark */
-	int c;
-	lf->n = 0;
-	do {
-		c = getc(lf->f);
-		if (c == EOF || c != *(const unsigned char *)p++) return c;
-		lf->buff[lf->n++] = (char)c;  /* to be read by the parser */
-	} while (*p != '\0');
-	lf->n = 0;  /* prefix matched; discard it */
-	return getc(lf->f);  /* return next character */
-}
-
-
-/*
-** reads the first character of file 'f' and skips an optional BOM mark
-** in its beginning plus its first line if it starts with '#'. Returns
-** true if it skipped the first line.  In any case, '*cp' has the
-** first "valid" character of the file (after the optional BOM and
-** a first-line comment).
-*/
-static int compat53_skipcomment(compat53_LoadF *lf, int *cp) {
-	int c = *cp = compat53_skipBOM(lf);
-	if (c == '#') {  /* first line is a comment (Unix exec. file)? */
-		do {  /* skip first line */
-			c = getc(lf->f);
-		} while (c != EOF && c != '\n');
-		*cp = getc(lf->f);  /* skip end-of-line, if present */
-		return 1;  /* there was a comment */
-	}
-	else return 0;  /* no comment */
-}
-
-
-COMPAT53_API int luaL_loadfilex(lua_State *L, const char *filename, const char *mode) {
-	compat53_LoadF lf;
-	int status, readstatus;
-	int c;
-	int fnameindex = lua_gettop(L) + 1;  /* index of filename on the stack */
-	if (filename == NULL) {
-		lua_pushliteral(L, "=stdin");
-		lf.f = stdin;
-	}
-	else {
-		lua_pushfstring(L, "@%s", filename);
-#if defined(_MSC_VER)
-		/* This code is here to stop a deprecation error that stops builds
-		* if a certain macro is defined. While normally not caring would
-		* be best, some header-only libraries and builds can't afford to
-		* dictate this to the user. A quick check shows that fopen_s this
-		* goes back to VS 2005, and _fsopen goes back to VS 2003 .NET,
-		* possibly even before that so we don't need to do any version
-		* number checks, since this has been there since forever.  */
-
-		/* TO USER: if you want the behavior of typical fopen_s/fopen,
-		* which does lock the file on VC++, define the macro used below to 0 */
-#if COMPAT53_FOPEN_NO_LOCK
-		lf.f = _fsopen(filename, "r", _SH_DENYNO); /* do not lock the file in any way */
-		if (lf.f == NULL)
-			return compat53_errfile(L, "open", fnameindex);
-#else /* use default locking version */
-		if (fopen_s(&lf.f, filename, "r") != 0)
-			return compat53_errfile(L, "open", fnameindex);
-#endif /* Locking vs. No-locking fopen variants */
-#else
-		lf.f = fopen(filename, "r"); /* default stdlib doesn't forcefully lock files here */
-		if (lf.f == NULL) return compat53_errfile(L, "open", fnameindex);
-#endif
-	}
-	if (compat53_skipcomment(&lf, &c))  /* read initial portion */
-		lf.buff[lf.n++] = '\n';  /* add line to correct line numbers */
-	if (c == LUA_SIGNATURE[0] && filename) {  /* binary file? */
-#if defined(_MSC_VER)
-		if (freopen_s(&lf.f, filename, "rb", lf.f) != 0)
-			return compat53_errfile(L, "reopen", fnameindex);
-#else
-		lf.f = freopen(filename, "rb", lf.f);  /* reopen in binary mode */
-		if (lf.f == NULL) return compat53_errfile(L, "reopen", fnameindex);
-#endif
-		compat53_skipcomment(&lf, &c);  /* re-read initial portion */
-	}
-	if (c != EOF)
-		lf.buff[lf.n++] = (char)c;  /* 'c' is the first character of the stream */
-	status = lua_load(L, &compat53_getF, &lf, lua_tostring(L, -1), mode);
-	readstatus = ferror(lf.f);
-	if (filename) fclose(lf.f);  /* close file (even in case of errors) */
-	if (readstatus) {
-		lua_settop(L, fnameindex);  /* ignore results from 'lua_load' */
-		return compat53_errfile(L, "read", fnameindex);
-	}
-	lua_remove(L, fnameindex);
-	return status;
-}
-
-
-COMPAT53_API int luaL_loadbufferx(lua_State *L, const char *buff, size_t sz, const char *name, const char *mode) {
-	int status = LUA_OK;
-	if (sz > 0 && buff[0] == LUA_SIGNATURE[0]) {
-		status = compat53_checkmode(L, mode, "binary", LUA_ERRSYNTAX);
-	}
-	else {
-		status = compat53_checkmode(L, mode, "text", LUA_ERRSYNTAX);
-	}
-	if (status != LUA_OK)
-		return status;
-	return luaL_loadbuffer(L, buff, sz, name);
-}
-
-
-#if !defined(l_inspectstat) && \
-    (defined(unix) || defined(__unix) || defined(__unix__) || \
-     defined(__TOS_AIX__) || defined(_SYSTYPE_BSD) || \
-     (defined(__APPLE__) && defined(__MACH__)))
-/* some form of unix; check feature macros in unistd.h for details */
-#  include <unistd.h>
-/* check posix version; the relevant include files and macros probably
-* were available before 2001, but I'm not sure */
-#  if defined(_POSIX_VERSION) && _POSIX_VERSION >= 200112L
-#    include <sys/wait.h>
-#    define l_inspectstat(stat,what) \
-  if (WIFEXITED(stat)) { stat = WEXITSTATUS(stat); } \
-  else if (WIFSIGNALED(stat)) { stat = WTERMSIG(stat); what = "signal"; }
-#  endif
-#endif
-
-/* provide default (no-op) version */
-#if !defined(l_inspectstat)
-#  define l_inspectstat(stat,what) ((void)0)
-#endif
-
-
-COMPAT53_API int luaL_execresult(lua_State *L, int stat) {
-	const char *what = "exit";
-	if (stat == -1)
-		return luaL_fileresult(L, 0, NULL);
-	else {
-		l_inspectstat(stat, what);
-		if (*what == 'e' && stat == 0)
-			lua_pushboolean(L, 1);
-		else
-			lua_pushnil(L);
-		lua_pushstring(L, what);
-		lua_pushinteger(L, stat);
-		return 3;
-	}
-}
-
-
-COMPAT53_API void luaL_buffinit(lua_State *L, luaL_Buffer_53 *B) {
-	/* make it crash if used via pointer to a 5.1-style luaL_Buffer */
-	B->b.p = NULL;
-	B->b.L = NULL;
-	B->b.lvl = 0;
-	/* reuse the buffer from the 5.1-style luaL_Buffer though! */
-	B->ptr = B->b.buffer;
-	B->capacity = LUAL_BUFFERSIZE;
-	B->nelems = 0;
-	B->L2 = L;
-}
-
-
-COMPAT53_API char *luaL_prepbuffsize(luaL_Buffer_53 *B, size_t s) {
-	if (B->capacity - B->nelems < s) { /* needs to grow */
-		char* newptr = NULL;
-		size_t newcap = B->capacity * 2;
-		if (newcap - B->nelems < s)
-			newcap = B->nelems + s;
-		if (newcap < B->capacity) /* overflow */
-			luaL_error(B->L2, "buffer too large");
-		newptr = (char*)lua_newuserdata(B->L2, newcap);
-		memcpy(newptr, B->ptr, B->nelems);
-		if (B->ptr != B->b.buffer)
-			lua_replace(B->L2, -2); /* remove old buffer */
-		B->ptr = newptr;
-		B->capacity = newcap;
-	}
-	return B->ptr + B->nelems;
-}
-
-
-COMPAT53_API void luaL_addlstring(luaL_Buffer_53 *B, const char *s, size_t l) {
-	memcpy(luaL_prepbuffsize(B, l), s, l);
-	luaL_addsize(B, l);
-}
-
-
-COMPAT53_API void luaL_addvalue(luaL_Buffer_53 *B) {
-	size_t len = 0;
-	const char *s = lua_tolstring(B->L2, -1, &len);
-	if (!s)
-		luaL_error(B->L2, "cannot convert value to string");
-	if (B->ptr != B->b.buffer)
-		lua_insert(B->L2, -2); /* userdata buffer must be at stack top */
-	luaL_addlstring(B, s, len);
-	lua_remove(B->L2, B->ptr != B->b.buffer ? -2 : -1);
-}
-
-
-void luaL_pushresult(luaL_Buffer_53 *B) {
-	lua_pushlstring(B->L2, B->ptr, B->nelems);
-	if (B->ptr != B->b.buffer)
-		lua_replace(B->L2, -2); /* remove userdata buffer */
-}
-
-
-#endif /* Lua 5.1 */
-
-
-
-/* definitions for Lua 5.1 and Lua 5.2 */
-#if defined( LUA_VERSION_NUM ) && LUA_VERSION_NUM <= 502
-
-
-COMPAT53_API int lua_geti(lua_State *L, int index, lua_Integer i) {
-	index = lua_absindex(L, index);
-	lua_pushinteger(L, i);
-	lua_gettable(L, index);
-	return lua_type(L, -1);
-}
-
-
-COMPAT53_API int lua_isinteger(lua_State *L, int index) {
-	if (lua_type(L, index) == LUA_TNUMBER) {
-		lua_Number n = lua_tonumber(L, index);
-		lua_Integer i = lua_tointeger(L, index);
-		if (i == n)
-			return 1;
-	}
-	return 0;
-}
-
-
-COMPAT53_API lua_Integer lua_tointegerx(lua_State *L, int i, int *isnum) {
-	int ok = 0;
-	lua_Number n = lua_tonumberx(L, i, &ok);
-	if (ok) {
-		if (n == (lua_Integer)n) {
-			if (isnum)
-				*isnum = 1;
-			return (lua_Integer)n;
-		}
-	}
-	if (isnum)
-		*isnum = 0;
-	return 0;
-}
-
-
-static void compat53_reverse(lua_State *L, int a, int b) {
-	for (; a < b; ++a, --b) {
-		lua_pushvalue(L, a);
-		lua_pushvalue(L, b);
-		lua_replace(L, a);
-		lua_replace(L, b);
-	}
-}
-
-
-COMPAT53_API void lua_rotate(lua_State *L, int idx, int n) {
-	int n_elems = 0;
-	idx = lua_absindex(L, idx);
-	n_elems = lua_gettop(L) - idx + 1;
-	if (n < 0)
-		n += n_elems;
-	if (n > 0 && n < n_elems) {
-		luaL_checkstack(L, 2, "not enough stack slots available");
-		n = n_elems - n;
-		compat53_reverse(L, idx, idx + n - 1);
-		compat53_reverse(L, idx + n, idx + n_elems - 1);
-		compat53_reverse(L, idx, idx + n_elems - 1);
-	}
-}
-
-
-COMPAT53_API void lua_seti(lua_State *L, int index, lua_Integer i) {
-	luaL_checkstack(L, 1, "not enough stack slots available");
-	index = lua_absindex(L, index);
-	lua_pushinteger(L, i);
-	lua_insert(L, -2);
-	lua_settable(L, index);
-}
-
-
-#if !defined(lua_str2number)
-#  define lua_str2number(s, p)  strtod((s), (p))
-#endif
-
-COMPAT53_API size_t lua_stringtonumber(lua_State *L, const char *s) {
-	char* endptr;
-	lua_Number n = lua_str2number(s, &endptr);
-	if (endptr != s) {
-		while (*endptr != '\0' && isspace((unsigned char)*endptr))
-			++endptr;
-		if (*endptr == '\0') {
-			lua_pushnumber(L, n);
-			return endptr - s + 1;
-		}
-	}
-	return 0;
-}
-
-
-COMPAT53_API const char *luaL_tolstring(lua_State *L, int idx, size_t *len) {
-	if (!luaL_callmeta(L, idx, "__tostring")) {
-		int t = lua_type(L, idx), tt = 0;
-		char const* name = NULL;
-		switch (t) {
-		case LUA_TNIL:
-			lua_pushliteral(L, "nil");
-			break;
-		case LUA_TSTRING:
-		case LUA_TNUMBER:
-			lua_pushvalue(L, idx);
-			break;
-		case LUA_TBOOLEAN:
-			if (lua_toboolean(L, idx))
-				lua_pushliteral(L, "true");
-			else
-				lua_pushliteral(L, "false");
-			break;
-		default:
-			tt = luaL_getmetafield(L, idx, "__name");
-			name = (tt == LUA_TSTRING) ? lua_tostring(L, -1) : lua_typename(L, t);
-			lua_pushfstring(L, "%s: %p", name, lua_topointer(L, idx));
-			if (tt != LUA_TNIL)
-				lua_replace(L, -2);
-			break;
-		}
-	}
-	else {
-		if (!lua_isstring(L, -1))
-			luaL_error(L, "'__tostring' must return a string");
-	}
-	return lua_tolstring(L, -1, len);
-}
-
-
-COMPAT53_API void luaL_requiref(lua_State *L, const char *modname,
-	lua_CFunction openf, int glb) {
-	luaL_checkstack(L, 3, "not enough stack slots available");
-	luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED");
-	if (lua_getfield(L, -1, modname) == LUA_TNIL) {
-		lua_pop(L, 1);
-		lua_pushcfunction(L, openf);
-		lua_pushstring(L, modname);
-		lua_call(L, 1, 1);
-		lua_pushvalue(L, -1);
-		lua_setfield(L, -3, modname);
-	}
-	if (glb) {
-		lua_pushvalue(L, -1);
-		lua_setglobal(L, modname);
-	}
-	lua_replace(L, -2);
-}
-
-
-#endif /* Lua 5.1 and 5.2 */
-
-
-#endif /* KEPLER_PROJECT_COMPAT53_C_ */
-
-
-/*********************************************************************
-* This file contains parts of Lua 5.2's and Lua 5.3's source code:
-*
-* Copyright (C) 1994-2014 Lua.org, PUC-Rio.
-*
-* Permission is hereby granted, free of charge, to any person obtaining
-* a copy of this software and associated documentation files (the
-* "Software"), to deal in the Software without restriction, including
-* without limitation the rights to use, copy, modify, merge, publish,
-* distribute, sublicense, and/or sell copies of the Software, and to
-* permit persons to whom the Software is furnished to do so, subject to
-* the following conditions:
-*
-* The above copyright notice and this permission notice shall be
-* included in all copies or substantial portions of the Software.
-*
-* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-*********************************************************************/
-
-- 
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