[Webkit-unassigned] [Bug 25204] New: Create a fast path for ReplaceSelectionCommand that merges text nodes

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=25204

           Summary: Create a fast path for ReplaceSelectionCommand that
                    merges text nodes
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh
        OS/Version: Mac OS X 10.5
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: HTML Editing
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: justin.garcia at apple.com
                CC: mitz at webkit.org


During simple pastes (just pasting a text node) into a run of text, we don't
just insert the text into the text node that holds the selection, we split and
insert the fragment.  This is slow and we run into this problem:

https://bugs.webkit.org/show_bug.cgi?id=6148

in the layout and rendering code where adjacent text nodes don't shape
correctly in Arabic.

<rdar://problem/6758795>


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