Function luaB_warn

extlibs/lua/src/lbaselib.c:45–55

** Creates a warning with all given arguments. ** Check first for errors; otherwise an error may interrupt ** the composition of a warning, leaving it unfinished. */

** the composition of a warning, leaving it unfinished.
*/
static int luaB_warn (lua_State *L) {
  int n = lua_gettop(L);  /* number of arguments */
  int i;
  luaL_checkstring(L, 1);  /* at least one argument */
  for (i = 2; i <= n; i++)
    luaL_checkstring(L, i);  /* make sure all arguments are strings */
  for (i = 1; i < n; i++)  /* compose warning */
    lua_warning(L, lua_tostring(L, i), 1);
  lua_warning(L, lua_tostring(L, n), 0);  /* close warning */
  return 0;
}


#define SPACECHARS	" \f\n\r\t\v"