From what I can gather, this person is confusing executables with source code.
An EXE is compiled code. It's not human-readable. Open it up in a text editor and you'll get garbage. Heck, several text editors on Linux will warn you that saving changes to the executable through a text editor will corrupt it.
What you're looking for is the actual human-readable source code. To obtain that, you need to use the Subversion (SVN) repository. A client such as TortoiseSVN will allow you to do this.