In the latest version of eclipse luna it is not possible to use square brackets in any editor. I have a german keyboard and I don't want to switch to english layout. Under preferences -> general -> keys it is not possible to find the key combination altgr-8 or altgr-9. I uninstalled emmet and freemarker, but this did not solve the problem.
Is there someone who has an idea how to fix this problem?
Ok, i solved the problem.
I had to remove the standard hotkeys for 'previous edit point' and 'next edit point'.
This is done under window - preferences - keys
and clicking unbind command
Then the brackets were no longer blocked.