Opened 8 years ago

Closed 8 years ago

#2679 closed Bug (fixed)

Indent causes infinite loop

Reported by: dqbai Owned by: martinkou
Priority: Normal Milestone: FCKeditor 2.6.4
Component: General Version: FCKeditor 2.5 Beta
Keywords: Confirmed IE Review+ Cc:

Description

Steps to reproduce

  1. Load following code into source view:
<p><span>
  <table width="100" border="1">
    <tr>
      <td>test</td>
    </tr>
  </table>
</span></p>
  1. Back to WYSIWYG, click Indent button(don't move the caret, let caret pointing at the very begining).

Expected result

No changes happening.

Current behavior

The IE7 will return an unresponsive script alert.

Stop script execution and back to source view, it shows:

<p><span><span id="1227705253552S" style="display: none">&nbsp;</span></span></p>
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<p><span>
<table width="100" border="1">
    <tbody>
        <tr>
            <td>test</td>
        </tr>
    </tbody>
</table>
</span></p>

Browsers

IE6, IE7.

Additions

This is some how like #1717.

Attachments (1)

2679.patch (1.4 KB) - added by martinkou 8 years ago.

Download all attachments as: .zip

Change History (11)

comment:1 Changed 8 years ago by arczi

  • Keywords Confirmed IE added
  • Version changed from FCKeditor 2.6.3 to FCKeditor 2.5 Beta

Confirmed in IE7

comment:2 Changed 8 years ago by martinkou

  • Owner set to martinkou
  • Status changed from new to assigned

comment:3 Changed 8 years ago by martinkou

#2712 may be related to this bug.

comment:4 Changed 8 years ago by martinkou

So what happens here is this:

  1. FCKDomRangeIterator sees <table> inside <p><span>, tries to split <table> into another block.
  2. Splitting the block means all the parent tags are duplicated as well, so after the split, we have <p><span></span></p> and <p><span><table>... The iterator now looks at the newly splitted block, which is exactly the same as the previous block before it was split.
  3. So the iterator goes back to step 1.

This is actually a special case of #1717 that we've left unfixed. I haven't really traced the execution in #2712 yet but I guess after a few steps in the iterator the same thing happened.

comment:5 Changed 8 years ago by martinkou

The test case of #1717 causes infinite loop in the SVN trunk as well.

Reverting [2274] fixes all three bugs (#1717, #2712 and #2679), but causes #2387 to come back.

comment:6 Changed 8 years ago by martinkou

#2712 is marked as a dup to this.

Changed 8 years ago by martinkou

comment:7 Changed 8 years ago by martinkou

  • Keywords Review? added

I found a simple fix which seems to fix all three infinite loop tickets without breaking #2387. Not sure if that's the perfect solution though - I still don't really understand what FCKDomRangeIterator is doing.

comment:8 Changed 8 years ago by martinkou

  • Milestone set to FCKeditor 2.6.4

comment:9 Changed 8 years ago by fredck

  • Keywords Review+ added; Review? removed

The range iterator in IE may be quite sensible about invalid HTML due to the weird IE DOM. Your fix should not bring any damage, and it works well.

comment:10 Changed 8 years ago by martinkou

  • Resolution set to fixed
  • Status changed from assigned to closed

Fixed with [2777].

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