By default, the following exclusions are applied:

**/*~
**/#*#
**/%*%
**/.#*
**/._*
**/.bzr
**/.bzr/**
**/.bzrignore
**/CVS
**/CVS/**
**/.cvsignore
**/.DS_Store
**/.git
**/.git/**
**/.gitattributes
**/.gitignore
**/.gitmodules
**/.hg
**/.hg/**
**/.hgignore
**/.hgsub
**/.hgsubstate
**/.hgtags
**/SCCS
**/SCCS/**
**/.svn
**/.svn/**
**/vssver.scc

Set this option to false if you do not want these default exclusions to be applied.