From 965dabd9066134bd059863c6eaabc3b7a76d7775 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=BA=91=E9=A3=8E?= <cloudwu@gmail.com>
Date: Sat, 13 Jul 2013 18:51:44 +0800
Subject: [PATCH] remove luaL_traceback

---
 luacompat/compat52.c | 90 --------------------------------------------
 1 file changed, 90 deletions(-)

diff --git a/luacompat/compat52.c b/luacompat/compat52.c
index cac40806..159aa643 100644
--- a/luacompat/compat52.c
+++ b/luacompat/compat52.c
@@ -248,96 +248,6 @@ luaL_tolstring (lua_State *L, int idx, size_t *len) {
   return lua_tolstring(L, -1, len);
 }
 
-/*
-** {======================================================
-** Traceback
-** =======================================================
-*/
-
-
-#define LEVELS1	12	/* size of the first part of the stack */
-#define LEVELS2	10	/* size of the second part of the stack */
-
-
-
-/*
-** search for 'objidx' in table at index -1.
-** return 1 + string at top if find a good name.
-*/
-static int 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 (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 pushglobalfuncname (lua_State *L, lua_Debug *ar) {
-  int top = lua_gettop(L);
-  lua_getinfo(L, "f", ar);  /* push function */
-  lua_pushglobaltable(L);
-  if (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 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_pushfstring(L, "main chunk");
-  else if (*ar->what == 'C') {
-    if (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);
-}
-
-
-static int 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;
-}
-
-
-/* }====================================================== */
-
 #else
 
 LUALIB_API void