WYSIWYG-editor with "add custom html feature" and secure (validated) html output?

Posted by Tom on Stack Overflow See other posts from Stack Overflow or by Tom
Published on 2010-03-27T11:37:09Z Indexed on 2010/03/27 11:43 UTC
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wysiwyg

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html

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editor

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user-input

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security

I've been looking into some of the WYSIWYG editors (TinyMCE, FCKEditor, etc.) and they all seem to offer a lot of options.

However, one vital feature that seems to lack is a simple "add custom html" option which would allow the user to input any of these embed-snippets you find all around the web these days, for example a youtube video. This is different than a "edit html/source" feature as that requires actual knowledge of html and there is the risk of the user writing invalid code.

Another issue that I couldn't find much about is the output html. How would I make sure that this output causes no security invulnerabilities? Even when the user has the ability to add his own html?

So, basically, is there an open source WYSIWYG editor which covers these 2 features?

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