Reported by fantasai

8.6 (The box model for inline elements in bidirectional context) says:

  # When the element's 'direction' property is 'ltr', the left-most
  # generated box of the first line box in which the element appears
  # has the left margin, left border and left padding, and the right-
  # most generated box of the last line box in which the element
  # appears has the right padding, right border and right margin.
  #
  # When the element's 'direction' property is 'rtl', the right-most
  # generated box of the first line box in which the element appears
  # has the right padding, right border and right margin, and the
  # left-most generated box of the last line box in which the element
  # appears has the left margin, left border and left padding.

The presentational results of this are unexpected.  When all of the following text is ltr:

   |Here is some text  [AND HERE IS MY QUOTE|
   |THAT CONTINUES ON THE LINE]  and my text|
   |continues.                              |

When the quote is of opposite-direction text:

   |Here is some text ETOUQ YM SI EREH DNA] |
   | [ENIL EHT NO SEUNITNOC TAHT and my text|
   |continues.                              |

The borders ought to be on the other sides; instead of deciding on which side
of the first/last box to draw the start/end decorations based on the element's
'direction' property, we should use the element's /parent's/ direction
property.

Conversation begins:
Bug description:
http://lists.w3.org/Archives/Public/www-style/2011May/0186.html