Hi,

I would like to understand how much is this a desired behavior.
Consider following example:

<p><span tts:fontStyle="italic">1 </span><span tts:textDecoration="underline"> </span><span tts:fontStyle="bold"> 2</span></p>

When parsed by generateISD, the resulting elements are: [1 ][ ][ 2]
In theory this should be rendered as: 1   2
(i.e. include 3 whitespaces of different styles)

Checking result in DOM inspector, all spans are added, however, browser collapses whitespace spans so only the first one is visible.

If this is desired behavior, it would be nice to include this logic in generateISD and collapse whitespace spans there (just like whitespace chars are collapsed inside spans).

Thanks!