Multiple styles lost when changing coreStyles_underling to use <span> with inline style

[Steven Wood]

I changed the editor configuration object so that instead of inserting a <u> for underline, it inserts a <span> with an inline style :

coreStyles_underline: {

element: "span", attributes : {style: "text-decoration: underline"}

}

This works great except that when you apply this to an element that has had e.g. it's font size increased, the "underline" span replaces the font size one, effectively losing that style.

To reproduce - create an editor with the configuration modified as above, enter some text, either change the font family or font size of the text, then underline the text.