[TYPO3-core] RFC #12505: Bug: JSMENU's showActive is broken

[Joerg Wagner [DigiLog]]

This is an SVN patch request.

Type: Bugfix

Bugtracker references:
http://bugs.typo3.org/view.php?id=12505

Branches:
TYPO3_4-2 & trunk
TYPO3_4-3 & trunk

Problem:
The implementation of the JSMENUITEM property "showActive" is (very) 
flawed. It only works for a small subset of all possible HMENU 
configurations.

Solution:
The problem is simple to solve. The JSMENU code to determine if a page 
is active is very simplistic and will not work in a large number of more 
complex cases. Funny thing is that there is a dedicated method in the 
same PHP file that does the job and does it right. JSMENU just does not 
use it. The patches contain a one-line fix that is thoroughly tested in 
many HMENU constellations.

Cheers, Jörg.
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