E.memoryArea not working on ESP8266 (due to char-iterator ?)

Based on a lot of copy/paste, trial and error, E.memoryArea works for strings.
function jsvStringIteratorGetChar in jsviterator.h is extend to handle native string

static ALWAYS_INLINE char jsvStringIteratorGetChar(JsvStringIterator *it) {
  if (!it->ptr) return 0;
  if (jsvIsNativeString(it->var)){
    int addr = (int)it->ptr + (int)it->charIdx;
	uint32_t bytes = *(uint32_t*)(addr & ~3);
	return ((uint8_t*)&bytes)[(int)addr & 3];
  }
  else return it->ptr[it->charIdx];
}

In next step function jslNextCh in jslex.c is extended too and first test calling a simple function works fine.

static ALWAYS_INLINE char jslNextCh(JsLex *lex) {
  if(jsvIsNativeString(lex->it.var)){
	int addr = (int)lex->it.ptr + (int)lex->it.charIdx;
	uint32_t bytes = *(uint32_t*)(addr & ~3);
	return ((uint8_t*)&bytes)[(int)addr & 3];
  }
  else return (char)(lex->it.ptr ? lex->it.ptr[lex->it.charIdx] : 0);
}

Pretty sure there is a nicer way doing this, and we will see this in next version.
Anyway, it opened a new door of knowledge for me.