Function value2fenv

other_src/lua/src/lpeg.cpp:1034–1040

** create a new ktable for pattern at the stack top, mapping ** '1' to the value at stack position 'vidx'. */

** '1' to the value at stack position 'vidx'.
*/
static int value2fenv (lua_State *L, int vidx) {
  lua_createtable(L, 1, 0);
  lua_pushvalue(L, vidx);
  lua_rawseti(L, -2, 1);
  lua_setfenv(L, -2);
  return 1;
}


static Instruction *newpatt (lua_State *L, size_t n) {