Wrong rowspan and empty rows after merging down rowspanned cells

[Koen Willems]

Take a table like this:

<table title="table" cellspacing="0" cellpadding="0" summary="table">
    <thead>
        <tr>
            <th scope="col">1</th>
            <th scope="col">2</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>a</td>
            <td rowspan="3">b</td>
        </tr>
        <tr>
            <td>c</td>
        </tr>
        <tr>
            <td>d</td>
        </tr>
        <tr>
            <td>e</td>
            <td>f</td>
        </tr>
    </tbody>
</table>

Now merge down cell c with cell d and switch to SourceMode to look at the code. Cell b still has a rowspan 3 and cell c has a rowspan 2. Furthermore an empty row appears.

[Koen Willems]

And I added a patch. Some part of the code in the patch is related to ​http://dev.fckeditor.net/attachment/ticket/2778/2778.patch

[Martin Kou]

The proposed patch includes the changes in #2813.

[Frederico Caldeira Knabben]

There are too many changes being proposed to the code. As the 2.6.5 is mainly concerned about compatibility, it's better to avoid the risk of braking this.

We may include these changes in a future version, probably on CKEditor instead.

[Jakub Ś]

This issue is also reproducible in latest CKEditor 3.6.2