Function maybe_drop_pre

static/editor.md/lib/codemirror/mode/erlang/erlang.js:425–437

(s,token)

  }

  function maybe_drop_pre(s,token) {
    var last = s.length-1;

    if (0 < last && s[last].type === "record" && token.type === "dot") {
      s.pop();
    }else if (0 < last && s[last].type === "group") {
      s.pop();
      s.push(token);
    }else{
      s.push(token);
    }
    return s;
  }

  function maybe_drop_post(s) {
    var last = s.length-1;