static LS extractEmbeddedEvals(S s, O... _) {
  new LS list;
  if (!contains(s, "{=")) ret list;
  
  LS tok = javaTok(s);
  Map<Int> bracketMap = curlyBracketMap(tok);
  for (int i = 1; i < l(tok)-4; i += 2) {
    continue unless eq(tok.get(i), "{") && eqGet(tok, i+1, "") && eqGet(tok, i+2, "=");
    // eval found
    
    int j = or(bracketMap.get(i), l(tok));
    S code = joinSubList(tok, i+4, j-1);
    list.add(code);
  }
  ret list;
}