Function pushglobalfuncname

depends/lua/src/lauxlib.c:73–91

** Search for a name for a function in all loaded modules */

** Search for a name for a function in all loaded modules
*/
static int pushglobalfuncname (lua_State *L, lua_Debug *ar) {
  int top = lua_gettop(L);
  lua_getinfo(L, "f", ar);  /* push function */
  lua_getfield(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
  if (findfield(L, top + 1, 2)) {
    const char *name = lua_tostring(L, -1);
    if (strncmp(name, "_G.", 3) == 0) {  /* name start with '_G.'? */
      lua_pushstring(L, name + 3);  /* push name without prefix */
      lua_remove(L, -2);  /* remove original name */
    }
    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) {