hhuijser/liferay-portal — pull request #206 by jjangsam (2011-10-11 18:05:39+00:00)
Title: LPS-21997

Due to http://issues.liferay.com/browse/LPS-20282, you can now enter in empty comment which will appear as StringPool.THREE_SPACES.

It would not make sense for user to have validation required and still be able to enter in the empty message.
Not sure if this is a intended behavior...