Missing white space between <tspan>s

[Tavmjong Bah]

If you have two <tspan>'s on separate lines that are indented (and without 'x' or 'dx' attributes, which Inkscape generated text uses), there should be a white space between the displayed text of the <tspan>'s. See:

 http://www.w3.org/TR/SVG/text.html#WhiteSpace

For example:
   <text>
    <tspan>My first span.</tspan>
    <tspan>My second span.</tspan>
   </text>
Should be rendered as:
  My first span. My second span.
But is being rendered as:
  My first span.My second span.

The newline's are stripped out but the indention should be collapsed to one remaining space.

[Tavmjong Bah (tavmjong-free)]

White space at the beginning (end) of a <tspan> should be collapsed, but the resulting single space should not be removed unless it is the first (last) <tspan> inside a <text>.

[Qantas94Heavy (qantas94heavy)]

Can still reproduce this issue on current Inkscape master (4855a8a2).