Unix/Linux/whatever should have just forbidden spaces in filenames in the first place since none of the basic tools make it easy iterate over a list of filenames with spaces correctly.
>>J_Darn+(OP)
At least UNIX doesn't have a space in the path of the main programs directory (I'm looking at you Windows).
Also, many of the basic tools have a -0 option which uses the null character to replace many uses of space. Still far from an adequate solution though.