修改mode-compile.el以使用嵌入空格处理MS-Windows路径？

Can anyone suggest a modification of mode-compile.el that will make it work better on Windows? My specific issue is handling of path names that contain blanks. I'm working on code in Ruby, using "GNU Emacs 22.2.1 (i386-mingw-nt5.1.2600) of 2008-03-26 on RELEASE" with mode-compile.el version: 2.29 (Last modified: 2006/12/01 13:52:47)Can anyone suggest a modification of mode-compi