[Webkit-unassigned] [Bug 42849] New: Incorrect merging of LIs using backspace

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=42849

           Summary: Incorrect merging of LIs using backspace
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: HTML Editing
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jparent at google.com
                CC: tony at chromium.org, ojan at chromium.org,
                    rniwa at webkit.org, enrica at apple.com


Created an attachment (id=62335)
 --> (https://bugs.webkit.org/attachment.cgi?id=62335)
Test case

Repro steps:
1. Start with a bold tag wrapping a list (or attached test file):
<div contentEditable>
<b>
<ul><li>asdf</li><li>Backspace here</li></ul>
</b>
</div>
2. Put your cursor at the start of the "Backspace here" line
3. Hit backspace.

Result (HTML got crazy, renders with a large gap between "asdf" and "Backspace here"):
<div contenteditable>
<b>
<ul><li>asdf<span class="Apple-style-span" style="font-weight: normal; "><b><ul style="display: inline !important; "><li style="display: inline !important; ">Backspace here</li></ul></b></span></li></ul>
</b>
</div>

Expected result (list items just merge):
<div contentEditable>
<b>
<ul><li>asdfBackspace here</li></ul>
</b>
</div>

Notes:
* If you continue to hit backspace, the cursor is rendered to the left of the "B" in "Backspace", but the character removed is the "f" in "asdf", then the "d", then the "s", etc, so the character being removed and the visual indication of the character to be removed do not match.
* This also occurs with <i> or <u> tags instead of <b>
* This also occurs if you put your cursor at the end of the "asdf" line and hit delete.

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