[Webkit-unassigned] [Bug 27396] New: Moving cursor in Thai text sometimes jumps over two characters

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=27396

           Summary: Moving cursor in Thai text sometimes jumps over two
                    characters
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML Editing
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ap at webkit.org
                CC: hbono at chromium.org


This is very similar to bug 24342, but happens for different characters. Moving
insertion point left or right shouldn't jump over several glyphs, even if those
form an extended grapheme cluster.

ICU has a special case for those Thai characters now, see
<http://source.icu-project.org/repos/icu/icu/trunk/source/data/brkitr/char_th.txt>.
We should do the same.

Patch with a test forthcoming.

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