servo/servo — pull request #4360 by pcwalton (2014-12-13 01:55:29+00:00)
Title: layout: Implement `word-spacing` per CSS 2.1 § 16.4.

This assumes that there are no ligatures that span across multiple
words. Since we have a per-word shape cache, this is a safe assumption
as of now. I have left comments to ensure that, if and when this is
revisted, we make sure to handle it properly.

r? @mbrubeck