Why would it take hundreds of lines to handle them? Actually the shell doesn't so much care about control characters as characters found in $IFS which is space, tab, and newline by default. The proposal isn't to remove space, so it won't solve any problems for people writing shell scripts will it?
In any case, someone gave some examples of how to handle whitespace (and anything else) properly in shell scripts below. Use of arrays and proper quoting or find0/xargs0 combinations aren't too complicated and work correctly. The problem is that if there is a mistake, it won't be obvious since it will work with most input.