Using the $Prompt$ Macro

I may have missed something obvious, but when using the $Prompt$ macro in conjunction with an external tool, is there a way to tell the prompt to retain whitespace?

Example: I've created an external tool mapping for sccs. When I call the macro for sccs delget to check the file in, the prompt come up and I enter the description for this delta: ex - removed unecessary imports

However, when I check the file history, only removed was passed to the delget command.

I've tried surrounding $Prompt$ with quotes in the macro definition as well as quoting the content I enter in the input dialog. Neither have worked.