2009-03-16  Darin Adler  <darin@apple.com>

        Reviewed by Adele Peterson.

        Bug 24629: moving forward or backward a paragraph fails at edge of document
        https://bugs.webkit.org/show_bug.cgi?id=24629
        rdar://problem/6544413

        Test: editing/selection/move-paragraph-document-edges.html

        * editing/visible_units.cpp:
        (WebCore::previousParagraphPosition): Use the last result from
        previousLinePosition rather than going all the way back to what was originally
        passed in when we hit exception cases like null or not moving. This correctly
        inherits the behavior of previousLinePosition when we are in a paragraph at the
        edge of a document.
        (WebCore::nextParagraphPosition): Ditto.

LayoutTests:

2009-03-16  Darin Adler  <darin@apple.com>

        Reviewed by Adele Peterson.

        Bug 24629: moving forward or backward a paragraph fails at edge of document
        https://bugs.webkit.org/show_bug.cgi?id=24629
        rdar://problem/6544413

        * editing/selection/move-paragraph-document-edges-expected.txt: Added.
        * editing/selection/move-paragraph-document-edges.html: Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@41749 268f45cc-cd09-0410-ab3c-d52691b4dbfc