Click Preferences > Advanced > Folder References ,
Change File Pattern (minimal change to the original default value):
!(/\.(?!\W*)[^/]*|\.(tmproj|o|pyc)|/Icon\r|/svn-commit(\.[2-9])?\.tmp)$
as well as the Folder pattern (minimal change to the original default value):
!.*/(\.(?!\W*)[^/]*|CVS|_darcs|_MTN|\{arch\}|blib|.*~\.nib|.*\.(framework|app|pbproj|pbxproj|xcode(proj)?|bundle))$
This applies only to new project folders. For an existing one, you need to edit the template after right-clicking on the folder link and select Show Information .
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