[TYPO3-core] FYI: Fixed bug #7495: Various issues with nested lists in htmlArea RTE

[Stanislas Rolland]

FYI: The attached SVN patch was committed.

Type:
Bugfix

Problem:
Using the built-in execCommand function for indent/outdent within lists, 
every browser gets it wrong and eventually produces some invalid code 
for nested lists. The break point varies depending on the browser. 
Moreover, Safari inserts a span element inside every li element.

Solution:
The attached patch removes reliance on execCommand in Firefox, IE and 
Safari (but not in Opera where it fails), so that they all behave the 
same way. Also eliminates Apple span elements from li elements.

Bugtracker references:
http://bugs.typo3.org/view.php?id=7495

Branches:
TYPO3_4-2

Regards,
Stanislas
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