Folded code idented with tabs is deleted on save

This is a scaring issue that will eat your code when you won't notice....

Steps to reproduce:

1. Create or open any cpp file. Qt Creator must be configured to insert tabs, and not spaces, for identation.

2. Type something like this:

void foo() {
	int bar; //<- idented with a tab
}

3. Fold the foo function, then save the file... The body of the function is gone...

Tested on Windows 7 64 bits with Qt Creator 2.0.1 (Pre-2.0.1) - Built on Aug 18 2010 at 02:03:27 - From revision fee9647f89