Thank for your patch. I modified your code a little to allow the swap between tab in real time. My ftp server is down. I quickly puts the modified version.

For the svn, it's opened on http://code.google.com/p/qdevelop/ but it is necessary that I learn the svn to use it . Especially to authorize the modification by the other users.

QDevelop normally allow to replace tab by space. It's available on options dialog. It not do work?

ChMaster: Can you rewrite your last post because I don't understand. My English is bad too.