cakephp/cakephp — pull request #2253 by georgetony (2013-10-31 03:49:52+00:00)
Title: Make default fractionSymbol to false

The default value of '' will change:
0.2 = 20
But it should be $0.20 if nothing is specified as fractionSymbol.

Of course, adding this in every use will solve this issue:
'fractionSymbol' => false

But this option is rarely mentioned in the docs. And the default '' doesn't seem to have any particular use.