[Webkit-unassigned] [Bug 34821] should add Range.modify to match Selection.modify

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=34821





--- Comment #2 from Ryosuke Niwa <rniwa at webkit.org>  2010-12-04 17:40:57 PST ---
(In reply to comment #1)
> This seems to be a very useful feature and it's trivial to implement.  All we need to do is to create a VisibleSelection out of a Range, and do modify operation on that VisibleSelection and get a Range object back.

That's what I thought.  But not really.  For line and paragraph granularities, we have xPosForVerticalArrowNavigation.  It's not clear at all what's the correct value to use if the selection is created out of a range.

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