[Webkit-unassigned] [Bug 189620] New: When pasted content from Word some spaces in the `text/html` clipboard data content are removed

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=189620

            Bug ID: 189620
           Summary: When pasted content from Word some spaces in the
                    `text/html` clipboard data content are removed
           Product: WebKit
           Version: Safari 11
          Hardware: Macintosh
                OS: macOS 10.13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Event Handling
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: k.krzton at cksource.com

Created attachment 349761

  --> https://bugs.webkit.org/attachment.cgi?id=349761&action=review

Test Word file

As in the title, when content is copied from MS Word and then pasted inside browser, clipboard data transfer `text/html` content has some of the spaces removed.

For example:

Having a Word file (attached) with simple italic text, which can be represented like:

<i>Italic</i> text.

When copied, the `html/text` content is represented in a system clipboard with:

<p class=MsoNormal>
    <i style='mso-bidi-font-style:normal'>
        <span style='mso-ansi-language:PL'>Italic</span>
    </i>
    <span style='mso-ansi-language:PL'> text.<o:p></o:p></span>
</p>

But when pasted to Safari and accessed on `paste` event via `evt.clipboardData.getData( 'text/html' )` it is returned as:

<p class="MsoNormal" style="margin: 0cm 0cm 8pt...">
    <i>
        <span>Italic</span>
    </i>
    <span>text.<o:p></o:p></span>
</p>

When you can see the space is clearly missing.

It works fine on both Chrome and Firefox. Can be easily reproduced on this codepen - https://codepen.io/f1ames/pen/QBVZyM.

Safari version 11.1.2 (13605.3.8).
Microsoft Word version - 16.17 (180909).

See also https://github.com/ckeditor/ckeditor5-paste-from-office/issues/13 where the issue is described too.

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