[Webkit-unassigned] [Bug 25459] [Chromium] Regression(?): RTL texts wrapped by pre in contenteditable area with dir=rtl erroneously overflows

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=25459


Xiaomei Ji <xji at chromium.org> changed:

           What    |Removed                     |Added
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  Attachment #71462|0                           |1
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--- Comment #12 from Xiaomei Ji <xji at chromium.org>  2010-11-02 17:09:20 PST ---
Created an attachment (id=72773)
 --> (https://bugs.webkit.org/attachment.cgi?id=72773&action=review)
test case

It is a webkit bug. Safari and Chromium in Mac overflows wrongly using the attached test case. 

Dan is correct that it is the tabs in right-to-left overflow problem.

In the following line in RenderBlock::computeInlineDirectionPositionsForLine()

            r->m_box->setLogicalWidth(rt->width(r->m_start, r->m_stop - r->m_start, totalLogicalWidth, firstLine, &fallbackFonts, &glyphOverflow) + hyphenWidth);

'totalLogicalWidth' is not the x-axis position for a BidiRun in RTL, base on which, the width of 'tab' is computed wrongly in WidthIterator::advance().

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