[TYPO3-core] RFC #5896: Inserting a divider (<hr>) in the RTE breaks XHTML validation (and other things)

[Stanislas Rolland]

This is a SVN patch request.

Type: Bugfix

Problem:
Transformation and rendering of the hr element is messy: hr tag is 
wrapped despite not being valid inside paragraphs, links get broken when 
entered after an hr element, etc.

Solution:
1. Fix the RTE transformation (t3lib_parsehtml_proc):
1.1 Remove hr from $blockElementList;
1.2 Add hr to allowTagsOutside;
1.3 Wrap hr tags with LF on way to database
1.4 Avoid wrapping hr in paragraph on way to RTE.
2. Fix hr rendering (tslib_content):
2.1 Fix parseFunc handling of empty tags;
2.2 Fix encaps_lineSplit handling of empty tags (if on a single line) 
(from patch by Bernhard Kraft)
3.0 Add hr to 
lib.parseFunc_RTE.nonTypoTagStdWrap.encapsLines.encapsTagList 
(css_styled_content static template).


Bugtracker references:
http://bugs.typo3.org/view.php?id=5896
http://bugs.typo3.org/view.php?id=10609
http://bugs.typo3.org/view.php?id=12851
http://bugs.typo3.org/view.php?id=12982

Branches:
trunk
TYPO3_4-4

Kind regards,
Stanislas
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