Wrong indentation for unchanged values in HTML diff

[tg666]

While the changed values are visually nicely indented and formatted, the unchanged ones have their indentation aligned with the end of the key (this applies to both objects and arrays).

The reason is that while the changed values are rendered as nested <ul><li>, the unchanged values are simply rendered entirely in the <pre> tag.

[MrHeer]

I have also encountered this problem. Do you have any good solutions? @tg666