TYPO3 Core

Until now, it's not simple to get sys_category entries for items, like a page.

There are several examples around on how to do it by TS, the one that works for me is on http://stackoverflow.com/a/28559654/160968, others are on http://www.typo3-probleme.de/2014/04/07/typo3-6-x-kategorien-auslesen-und-verwenden/

I think it should be possible to use sys_category directly via getText,
for example:

temp.page_cats = TEXT
temp.page_cats.data = {page:categories}

Returning a comma separated list.
This would facilitate reusing of the system-wide categories in many places.

To stay with my example, with tx_news, you could then do

settings.useStdWrap = categories
settings.categories.override.cObject.data = {page:categories}
settings.categoryConjunction = or

and display all news that share the page's categories - very simple handling for editors!

A recursive "slide" option might be desirable as well.

What do you think?