After Effects Script: Inherit multiple character styles from parent text to child

[zooobat]

I have an After Effects script that copies the style and text of a text layer to another text layer in a separate comp. This works great if the parent text layer only contains one style, but I need one that is half bold and half normal. Is there a way for the script to loop through each character in the parent and apply that style to the corresponding character in the child?

This is what I have now - I found it in this tutorial: tutorial 

var parentText = comp("Precomp - People").layer("Single Title").text.sourceText;
var parentStyle = comp("Precomp - People").layer("Single Title").text.sourceText.style;
parentStyle.setText( parentText );